SNC 1DI - Practice Exam Answers

SNC 1DI - Practice Exam Answers

SNC 1DI Practice Exam Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances. Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance

Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct.

(a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct.

(a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. Decide if the sentence is true or false. If the sentence is false,

rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. True

Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube

(c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube.

False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. False - metals are usually malleable and ductile Decide if the sentence is true or false. If the sentence is false, rewrite it to make it correct. (a) Physical changes result in the formation of new substances.

False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. False - metals are usually malleable and ductile

(e) The starting substances in a reaction are called the products. rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube

(c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. False - metals are usually malleable and ductile (e) The starting substances in a reaction are called the products. False - the end substances in a reaction are called the products rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance

(b) A chemical property of salt is that it forms white crystals in the shape of a cube. False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. False - metals are usually malleable and ductile (e) The starting substances in a reaction are called the products.

False - the end substances in a reaction are called the products (f) To determine the density of a sample of material, you must measure the mass and volume of the sample. rewrite it to make it correct. (a) Physical changes result in the formation of new substances. False - chemical changes result in a new substance (b) A chemical property of salt is that it forms white crystals in the shape of a cube.

False - a physical property of salt is that it forms white crystals in the shape of a cube (c) The formation of dew is a physical change. True (d) Non-metals are usually malleable and ductile. False - metals are usually malleable and ductile (e) The starting substances in a reaction are called the products. False - the end substances in a reaction are called the products (f) To determine the density of a sample of material, you must

measure the mass and volume of the sample. False - to determine the density of a substance you must divide the mass of a substance by its volume Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue.

physical Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue.

physical (b) Gold is an excellent conductor of electricity. physical Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water

Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical Label each of the following properties as physical

or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical (d) Salt is soluble in water. Label each of the following properties as physical or chemical.

(a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical (d) Salt is soluble in water. physical Label each of the following properties as physical or chemical.

(a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical (d) Salt is soluble in water. physical (e) Calcium reacts with water to produce hydrogen

Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical (d) Salt is soluble in water. physical (e) Calcium reacts with water to produce

hydrogen. chemical Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical (b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical

(d) Salt is soluble in water. physical (e) Calcium reacts with water to produce hydrogen. chemical (f) Gasoline burns in an automobile engine Label each of the following properties as physical or chemical. (a) Copper sulphate crystals are blue. physical

(b) Gold is an excellent conductor of electricity. physical (c) Iron rusts when exposed to air and water. chemical (d) Salt is soluble in water. physical (e) Calcium reacts with water to produce hydrogen. chemical (f) Gasoline burns in an automobile engine. chemical

The density of aluminum is 2.7 g/cm3. Four students each measured the mass and volume of a sample of metal; their results are shown below. Only one of the students actually had a sample of aluminum; the other students had different materials. From the information given, decide which student had the aluminum. (a) mass = 28.4 g volume = 76.7 cm3 (b) mass = 37.4 g volume = 15.1 cm3

(c) mass = 88.3 g volume = 30.2 cm3 (d) mass = 76.7 g volume = 28.4 cm3 The density of aluminum is 2.7 g/cm3. Four students each measured the mass and volume of a sample of metal; their results are shown below. Only one of the students actually had a sample of aluminum; the other students had different materials. From the information given, decide which student had the aluminum.

(a) mass = 28.4 g volume = 76.7 cm3 (b) mass = 37.4 g volume = 15.1 cm3 (c) mass = 88.3 g volume = 30.2 cm3 (d) mass = 76.7 g volume = 28.4 cm3 The density of silver is 10.5 g/cm3. If you had a piece of silver with a mass of 458 g, what would the volume of the piece of silver be? (a) 0.022 cm3 (b) 43.6 cm3

(c) 447.5 cm3 (d) 468.5 cm3 The density of silver is 10.5 g/cm3. If you had a piece of silver with a mass of 458 g, what would the volume of the piece of silver be? (a) 0.022 cm3 (b) 43.6 cm3 (c) 447.5 cm3 (d) 468.5 cm3

properties is characteristic of metals? (a) Shiny, brittle, conduct heat and electricity. (b) Shiny, malleable, conduct heat and electricity. (c) Shiny, malleable, do not conduct heat and electricity. (d) Shiny, malleable, conduct heat

but not electricity. properties is characteristic of metals? (a) Shiny, brittle, conduct heat and electricity. (b) Shiny, malleable, conduct heat and electricity. (c) Shiny, malleable, do not conduct heat

and electricity. (d) Shiny, malleable, conduct heat but not electricity. State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. State whether each of the following changes is a physical

change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left

exposed to air. State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed

State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. State whether each of the following changes is a physical

change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made

State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made

(d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed

(c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made (d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. physical - cubes dissolve in coffee (can still taste the sugar) State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case.

(a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made (d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. physical - cubes dissolve in coffee (can still taste the

sugar) (e) You accidentally spill some bleach on your favourite blue shirt and end up with white stains on the shirt. State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air.

chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made (d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. physical - cubes dissolve in coffee (can still taste the sugar) (e) You accidentally spill some bleach on your favourite blue shirt and end up with white stains on the shirt. chemical - new colour produced

State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new

substance made (d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. physical - cubes dissolve in coffee (can still taste the sugar) (e) You accidentally spill some bleach on your favourite blue shirt and end up with white stains on the shirt. chemical - new colour produced (f) To reconnect a loose wire in your computer, the technician melts some solder.

State whether each of the following changes is a physical change or a chemical change. Give a reason for your answer in each case. (a) The snow on the sidewalk outside your house melts. physical - change in state (b) A piece of silverware gradually tarnishes when left exposed to air. chemical - new colour formed (c) Milk turns sour after several days. chemical - new odour/taste produced therefore new substance made

(d) The three sugar cubes that you add to your coffee disappear when you stir the coffee. physical - cubes dissolve in coffee (can still taste the sugar) (e) You accidentally spill some bleach on your favourite blue shirt and end up with white stains on the shirt. chemical - new colour produced (f) To reconnect a loose wire in your computer, the technician melts some solder. physical - solder changes state

chemical reaction takes place. In this reaction (a) the products are nitrogen and oxygen. (b) the products are carbon dioxide and oxygen. (c) the products are water and hydrogen peroxide. (d) the products are hydrogen and oxygen. chemical reaction takes place. In this

reaction (a) the products are nitrogen and oxygen. (b) the products are carbon dioxide and oxygen. (c) the products are water and hydrogen peroxide. (d) the products are hydrogen and oxygen. Only one of the following lists does not consist entirely of

symbols for elements. Which one? (a) C, He, Mg, Cu (b) H, ASA, P, Fe (c) He, N, Cl, O (d) Ca, Ne, Fe, He Only one of the following lists does not consist entirely of symbols for elements. Which one?

(a) C, He, Mg, Cu (b) H, ASA, P, Fe (c) He, N, Cl, O (d) Ca, Ne, Fe, He The total number of atoms represented by the formula K2Cr2O7 is (a) 1 (b) 3 (c) 11

(d) 28 The total number of atoms represented by the formula K2Cr2O7 is (a) 1 (b) 3 (c) 11 (d) 28 Write symbols for the following elements that are

found in living things. Oxygen Carbon Hydrogen Nitrogen Phosphorus Sulphur Chlorine Sodium Potassium Magnesium

Iodine Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon Hydrogen Nitrogen Phosphorus

Sulphur Chlorine Sodium Potassium Magnesium Iodine Calcium Iron Write symbols for the following elements that are found in living things.

Oxygen - O Carbon - C Hydrogen Nitrogen Phosphorus Sulphur Chlorine Sodium Potassium Magnesium Iodine

Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen Phosphorus Sulphur

Chlorine Sodium Potassium Magnesium Iodine Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O

Carbon - C Hydrogen - H Nitrogen - N Phosphorus Sulphur Chlorine Sodium Potassium Magnesium Iodine Calcium

Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P Sulphur Chlorine

Sodium Potassium Magnesium Iodine Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C

Hydrogen - H Nitrogen - N Phosphorus - P Sulphur - S Chlorine Sodium Potassium Magnesium Iodine Calcium Iron

Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P Sulphur - S Chlorine - Cl Sodium

Potassium Magnesium Iodine Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H

Nitrogen - N Phosphorus - P Sulphur - S Chlorine - Cl Sodium - Na Potassium Magnesium Iodine Calcium Iron

Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P Sulphur - S Chlorine - Cl Sodium - Na Potassium - K

Magnesium Iodine Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N

Phosphorus - P Sulphur - S Chlorine - Cl Sodium - Na Potassium - K Magnesium - Mg Iodine Calcium Iron Write symbols for the following elements that are

found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P Sulphur - S Chlorine - Cl Sodium - Na Potassium - K Magnesium - Mg

Iodine - I Calcium Iron Write symbols for the following elements that are found in living things. Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P

Sulphur - S Chlorine - Cl Sodium - Na Potassium - K Magnesium - Mg Iodine - I Calcium - Ca Iron Write symbols for the following elements that are found in living things.

Oxygen - O Carbon - C Hydrogen - H Nitrogen - N Phosphorus - P Sulphur - S Chlorine - Cl Sodium - Na Potassium - K Magnesium - Mg Iodine - I

Calcium - Ca Iron - Fe Protons are (a) positively charged particles found outside the nucleus in an atom. (b) negatively charged particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) positively charged particles found

in the nucleus in an atom. Protons are (a) positively charged particles found outside the nucleus in an atom. (b) negatively charged particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) positively charged particles found in the nucleus in an atom.

Electrons are (a) positively charged particles found outside the nucleus in an atom. (b) negatively charged particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) negatively charged particles found in the nucleus in an atom.

Electrons are (a) positively charged particles found outside the nucleus in an atom. (b) negatively charged particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) negatively charged particles found in the nucleus in an atom.

Neutrons are (a) negatively charged particles found outside the nucleus in an atom. (b) neutral particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) positively charged particles found in the nucleus in an atom.

Neutrons are (a) negatively charged particles found outside the nucleus in an atom. (b) neutral particles found outside the nucleus in an atom. (c) neutral particles found in the nucleus in an atom. (d) positively charged particles found in the nucleus in an atom.

In Bohr's planetary model of the atom, he suggested that (a) electrons could be found only in certain orbits or energy levels. (b) the closer an electron is to the nucleus, the higher its energy. (c) electrons always stay in the same energy level. (d) the orbit closest to the nucleus can hold eight electrons.

In Bohr's planetary model of the atom, he suggested that (a) electrons could be found only in certain orbits or energy levels. (b) the closer an electron is to the nucleus, the higher its energy. (c) electrons always stay in the same energy level. (d) the orbit closest to the nucleus can hold eight electrons.

In which group of the periodic table are the halogens found? (a) 1 (b) 2 (c) 7 (d) 8 In which group of the periodic table are the halogens found?

(a) 1 (b) 2 (c) 7 (d) 8 In which group of the periodic table are the alkali metals found? (a) 1 (b) 2 (c) 7

(d) 8 In which group of the periodic table are the alkali metals found? (a) 1 (b) 2 (c) 7 (d) 8 Which group in the

periodic table contains the noble gases? (a) 1 (b) 2 (c) 7 (d) 8 Which group in the periodic table contains the noble gases? (a) 1

(b) 2 (c) 7 (d) 8 The most metallic elements in the periodic table are found: (a) on the extreme right of the table (b) on the extreme left of the table (c) in the middle of the table

(d) in the second column The most metallic elements in the periodic table are found: (a) on the extreme right of the table (b) on the extreme left of the table (c) in the middle of the table (d) in the second column

Rows in the periodic table are also referred to as (a) periods. (b) families. (c) groups. (d) columns. Rows in the periodic table are also referred to as (a) periods. (b) families.

(c) groups. (d) columns. Draw Bohr-Rutherford diagrams for the following elements: Be (AN = 4, MN = 9.01) Si (AN = 14, MN = 28.0)

Ar (AN, 18, MN = 39.9) Draw Bohr-Rutherford diagrams for the following elements: Be (AN = 4, MN = 9.01) P = 4, e = 4, n = 5 Draw Bohr-Rutherford diagrams for the following elements: Si (AN = 14, MN = 28.0) P = 14, e = 14, n = 14

Draw Bohr-Rutherford diagrams for the following elements: Ar (AN, 18, MN = 39.9) P = 18, e = 18, n = 22 Explain why Canadians enjoy earlier sunrises in July than in January. Write your answer in complete sentences.

Explain why Canadians enjoy earlier sunrises in July than in January. Write your answer in complete sentences. The days are longer due to the fact that we get more direct sunlight in the summer. The sun is in the sky for a longer period of time.

Because the days are longer the Sun rises earlier and sets later (a) the Earth's rotation (b) the Earth's revolution (c) the Moon's revolution (d) the Sun's rotation (a) the Earth's rotation (b) the Earth's revolution

(c) the Moon's revolution (d) the Sun's rotation Prepare a diagram that explains the factors responsible for our seasons. Prepare a diagram that explains the factors responsible for our

seasons. Choose the planet that is completely different from the other three. (a) Jupiter (b) Neptune (c) Mars (d) Saturn Choose the planet that is

completely different from the other three. (a) Jupiter (b) Neptune (c) Mars (d) Saturn Arrange the following planets in order of size from smallest to largest: Jupiter, Earth, Mars, Neptune.

Arrange the following planets in order of size from smallest to largest: Jupiter, Earth, Mars, Neptune. Mars, Earth, Neptune, Jupiter From the list given, choose the planet that has rings around it.

(a) Pluto (b) Mercury (c) Mars (d) Jupiter From the list given, choose the planet that has rings around it. (a) Pluto (b) Mercury (c) Mars

(d) Jupiter Which of the following statements describes a galaxy? (a) A galaxy consists of our Sun and all major planets. (b) A galaxy consists of our entire solar system and all the stars we can see. (c) A galaxy consists of about 200 billion stars, dust, gas, and solid matter that may form planets.

(d) A galaxy consists of all the matter in the universe. Which of the following statements describes a galaxy? (a) A galaxy consists of our Sun and all major planets. (b) A galaxy consists of our entire solar system and all the stars we can see. (c) A galaxy consists of about 200 billion stars, dust, gas, and solid

matter that may form planets. (d) A galaxy consists of all the matter in the universe. What object is most likely the birthplace of stars? (a) Black hole. (b) Supernova. (c) Nebula. (d) Neutron star.

What object is most likely the birthplace of stars? (a) Black hole. (b) Supernova. (c) Nebula. (d) Neutron star. Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. Write a paragraph explaining how a cloud of dust and gas can eventually

form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust

a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster

Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin

Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin the large build up of gas in the center will become the star cloud flattens into a disk due to the spinning

Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin the large build up of gas in the center will become the star cloud

flattens into a disk due to the spinning little pockets of gas accumulate and spin in the same direction as the cloud (will form planets) as the gases in the center compress the temperature rises to 10 000 000 oC and the star will ignite Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle

the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin the large build up of gas in the center will become the star cloud flattens into a disk due to the spinning little pockets of gas accumulate and spin in the same direction as the cloud (will form planets) as the gases in the center compress the temperature rises to 10 000 000 oC and the star will ignite solar winds from the new star blow away most of the hydrogen and helium from the inner regions leaving chunks of heavy matter

Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin the large build up of gas in the center will become the star cloud flattens into a disk due to the spinning

little pockets of gas accumulate and spin in the same direction as the cloud (will form planets) as the gases in the center compress the temperature rises to 10 000 000 oC and the star will ignite solar winds from the new star blow away most of the hydrogen and helium from the inner regions leaving chunks of heavy matter these chunks keep colliding with each other and grow in size to become planetismals and eventually the inner planets Write a paragraph explaining how a cloud of dust and gas can eventually form a star. Include diagrams in your answer. spaces between stars is filled with gas and dust

a dense area is called a Nebula mostly Hydrogen gravity pulls everything together and the gas and dust collapse everything is pulled towards the middle the cloud spins faster and faster more hydrogen builds up in the center same idea as a figure skater drawing their arms inwards as they spin the large build up of gas in the center will become the star cloud flattens into a disk due to the spinning little pockets of gas accumulate and spin in the same direction as the cloud (will form planets) as the gases in the center compress the temperature rises to 10 000 000 oC and the star will ignite

solar winds from the new star blow away most of the hydrogen and helium from the inner regions leaving chunks of heavy matter these chunks keep colliding with each other and grow in size to become planetismals and eventually the inner planets lighter more volatile elements (Hydrogen, Helium) are distributed in the outer regions forming the outer planets remaining matter makes up asteroids, meteors and comets What are the two most common elements found on the Sun? What role do they play in the energy-production

mechanism of the Sun? What are the two most common elements found on the Sun? hydrogen and helium What role do they play in the energy-production mechanism of the Sun? What are the two most common elements found on the Sun? hydrogen and helium

What role do they play in the energy-production mechanism of the Sun? In the center of the Sun, hydrogen is being converted to helium by the process of fusion. This is the energy production process of our star. The colour of a star depends on its (a) temperature. (b) size.

(c) distance. (d) position. The colour of a star depends on its (a) temperature. (b) size. (c) distance. (d) position. Which of the following is a biotic factor?

(a) temperature (b) sunlight (c) energy (d) decomposers Which of the following is a biotic factor? (a) temperature (b) sunlight (c) energy (d) decomposers

Which of the following is NOT recycled in an ecosystem? (a) water (b) energy (c) carbon (d) nitrogen Which of the following is NOT recycled in an ecosystem? (a) water

(b) energy (c) carbon (d) nitrogen What is the maximum number of individuals that can live in an area without harming the environment? (a) carrying capacity (b) steady state (c) climax community (d) population density

What is the maximum number of individuals that can live in an area without harming the environment? (a) carrying capacity (b) steady state (c) climax community (d) population density Which of the following organisms would be most affected by

bio-magnification? (a) frog (b) hawk (c) snake (d) grasshopper Which of the following organisms would be most affected by bio-magnification? (a) frog (b) hawk

(c) snake (d) grasshopper Consider the following food web: shark kingfisher codfish shrimp killer whale sealion

salmon minnows plankton (a) List the organisms in the second tropic level. Consider the following food web: shark kingfisher

killer whale sealion codfish shrimp salmon minnows plankton

(a) List the organisms in the second tropic level. shrimp, minnow Consider the following food web: shark kingfisher codfish shrimp killer whale sealion

salmon minnows plankton (b) List two things that are missing which are a key part of any food web. Consider the following food web: shark kingfisher

codfish shrimp killer whale sealion salmon minnows plankton (b) List two things that are missing which are a key part

of any food web. the Sun, decomposers Consider the following food web: shark kingfisher codfish shrimp killer whale sealion

salmon minnows plankton (c) What would happen to the sea lion population if all of the kingfishers were removed? Consider the following food web: shark kingfisher

codfish shrimp killer whale sealion salmon minnows plankton (c) What would happen to the sea lion population if all of

the kingfishers were removed? The population of sealions would increase because more food (codfish) would be available Consider the following food web: shark kingfisher codfish shrimp killer whale

sealion salmon minnows plankton (d) Name the trophic level and consumer order of the killer whale. Consider the following food web: shark

kingfisher codfish shrimp killer whale sealion salmon minnows plankton

(d) Name the trophic level and consumer order of the killer whale. 5th Trophic level Top carnivore or 4th order consumer Consider the following food web: shark kingfisher codfish shrimp

killer whale sealion salmon minnows plankton (e) What organism would you expect to be most affected by a chemical pesticide found in the ocean? Consider the following food web:

shark kingfisher codfish shrimp killer whale sealion salmon minnows plankton

(e) What organism would you expect to be most affected by a chemical pesticide found in the ocean? Killer Whale In an attempt to get a lush, green weed-free lawn, a person applies some weed killer to their lawn. Suppose each blade of grass absorbs 5 units of pesticide. Grasshoppers eat 15 blades of grass per day. A bird eats 3 grasshoppers per day. SHOW YOUR WORK. A) How much pesticide would a grasshopper have

accumulated after one month (30 days)? In an attempt to get a lush, green weed-free lawn, a person applies some weed killer to their lawn. Suppose each blade of grass absorbs 5 units of pesticide. Grasshoppers eat 15 blades of grass per day. A bird eats 3 grasshoppers per day. SHOW YOUR WORK. A) How much pesticide would a grasshopper have accumulated after one month (30 days)? = (grass) 5 units x (grasshopper) 15 blades x 30 days blade

day month = 2250 units month In an attempt to get a lush, green weed-free lawn, a person applies some weed killer to their lawn. Suppose each blade of grass absorbs 5 units of pesticide. Grasshoppers eat 15 blades of grass per day. A bird eats 3 grasshoppers per day. SHOW YOUR WORK. B) How much pesticide would the bird have accumulated after one

month? Six months? In an attempt to get a lush, green weed-free lawn, a person applies some weed killer to their lawn. Suppose each blade of grass absorbs 5 units of pesticide. Grasshoppers eat 15 blades of grass per day. A bird eats 3 grasshoppers per day. SHOW YOUR WORK. B) How much pesticide would the bird have accumulated after one month? Six months? One Month

= = 5 units in one blade x 15 blades eaten by grasshopper in one day x 3 grasshoppers eaten by bird in one day x 30 days in month 6750 units/month In an attempt to get a lush, green weed-free lawn, a

person applies some weed killer to their lawn. Suppose each blade of grass absorbs 5 units of pesticide. Grasshoppers eat 15 blades of grass per day. A bird eats 3 grasshoppers per day. SHOW YOUR WORK. B) How much pesticide would the bird have accumulated after one month? Six months? One Month = 6750 units/month Six Months = 6750 units/month x 6 months

= 40 500 units Match each of the following terms with the proper description. Match Description Term Eats only plants

(A) omnivore Eats only animals (B) decomposer Bacteria or fungi (C) carnivore

Eats both plants and animals (D) herbivore Part of Earth where all life exists (E) hydrosphere Part of Earth covered by water (F) biosphere

Match each of the following terms with the proper description. Match D Description Term

Eats only plants (A) omnivore Eats only animals (B) decomposer Bacteria or fungi (C) carnivore

Eats both plants and animals (D) herbivore Part of Earth where all life exists (E) hydrosphere Part of Earth covered by water

(F) biosphere Match each of the following terms with the proper description. Match Description Term D

Eats only plants (A) omnivore C Eats only animals (B) decomposer

Bacteria or fungi (C) carnivore Eats both plants and animals (D) herbivore Part of Earth where all life exists (E) hydrosphere

Part of Earth covered by water (F) biosphere Match each of the following terms with the proper description. Match Description

Term D Eats only plants (A) omnivore C Eats only animals

(B) decomposer B Bacteria or fungi (C) carnivore Eats both plants and animals

(D) herbivore Part of Earth where all life exists (E) hydrosphere Part of Earth covered by water (F) biosphere Match each of the following terms with the proper description.

Match Description Term D Eats only plants

(A) omnivore C Eats only animals (B) decomposer B Bacteria or fungi

(C) carnivore A Eats both plants and animals (D) herbivore Part of Earth where all life exists

(E) hydrosphere Part of Earth covered by water (F) biosphere Match each of the following terms with the proper description. Match Description

Term D Eats only plants (A) omnivore C

Eats only animals (B) decomposer B Bacteria or fungi (C) carnivore A

Eats both plants and animals (D) herbivore F Part of Earth where all life exists (E) hydrosphere

Part of Earth covered by water (F) biosphere Match each of the following terms with the proper description. Match Description Term

D Eats only plants (A) omnivore C Eats only animals

(B) decomposer B Bacteria or fungi (C) carnivore A Eats both plants and animals

(D) herbivore F Part of Earth where all life exists (E) hydrosphere E

Part of Earth covered by water (F) biosphere (a) How is carbon dioxide removed from the atmosphere? (b) How is carbon dioxide put into the atmosphere? (a)How is carbon dioxide removed from the

atmosphere? Carbon dioxide is removed through the process of photosynthesis (b) How is carbon dioxide put into the atmosphere? atmosphere?

Carbon dioxide is removed through the process of photosynthesis (b) How is carbon dioxide put into the atmosphere? Carbon dioxide is put into the atmosphere

through cellular respiration burning fossil fuels concern? (b) What practical things can you do to reduce carbon dioxide emissions? (No, you cant stop breathing!)

concern? Carbon dioxide is a greenhouse gas The build up of carbon dioxide will prevent heat from leaving the atmosphere (b) What practical things can you do to reduce carbon dioxide emissions? (No, you cant stop

breathing!) concern? Carbon dioxide is a greenhouse gas The build up of carbon dioxide will prevent heat from leaving the atmosphere

(b) What practical things can you do to reduce carbon dioxide emissions? (No, you cant stop breathing!) reduce burning of fossil fuels (clean transportation methods) recycle plant some trees

What is the term for using natural resources wisely so that they may be used forever? What is the term for using natural resources wisely so that they may be used forever? Sustainability of resources Describe two (2) benefits of eating locally and eating fewer processed foods.

Describe two (2) benefits of eating locally and eating fewer processed foods. less cost for transportation less cost to produce and package the food less chemicals to preserve the food Which of the following is a density-dependent factor that may affect a population?

(a) forest fire (b) flood (c) disease (d) tornado Which of the following is a density-dependent factor that may affect a population? (a) forest fire (b) flood (c) disease

(d) tornado Where is most of the Earths carbon stored? (a) ocean (b) forests (c) fossil fuels (d) atmosphere Where is most of the Earths carbon stored?

(a) ocean (b) forests (c) fossil fuels (d) atmosphere Which of the following is best evidence that the carrying capacity of an area has been reached? (a) population stabilizes or decreases (b) population grows gradually (c) there are plenty of natural

resources (d) the population increases rapidly Which of the following is best evidence that the carrying capacity of an area has been reached? (a) population stabilizes or decreases (b) population grows gradually (c) there are plenty of natural resources

(d) the population increases rapidly Most of the time in an ecosystem there are more (a) predators than prey (b) prey than predators (c) omnivores than herbivores (d) prey than decomposers Most of the time in an ecosystem there are more

(a) predators than prey (b) prey than predators (c) omnivores than herbivores (d) prey than decomposers Which of the following is true about plants? Plants (a) use oxygen to make sugar (b) use carbon dioxide to make sugar (c) never produce carbon dioxide (d) cause global warming

Which of the following is true about plants? Plants (a) use oxygen to make sugar (b) use carbon dioxide to make sugar (c) never produce carbon dioxide (d) cause global warming What term is given to a vulture that eats from the remains of a dead

animal? (a) scavenger (b) parasite (c) carnivore (d) decomposer What term is given to a vulture that eats from the remains of a dead animal? (a) scavenger (b) parasite

(c) carnivore (d) decomposer Consider the population numbers of Minnows and Oscar fish in a pond at Laurel Creek. year 1970 1972 1974 1976

1978 1980 1982 1984 1986 1988 1990 1992 1994 1996

# Minnow s 35 42 55 60 52 37 20

14 20 28 35 45 50 46 # Oscar fish 20 22

28 38 46 52 55 45 30 20 16 25 32

38 Using proper graphing technique, graph the populations of these creatures on the provided paper. Use a different colour for each population (include a legend) and include an appropriate title for your graph. Using proper graphing technique, graph the populations of these creatures on the provided paper. Use a different colour for each population (include a legend) and include an appropriate title for your graph.

Population numbers for Minnows and Oscar fish 70 60 # of animals 50 40

Minnows Oscar fish 30 20 10 0 1965

1970 1975 1980 1985 year

1990 1995 2000 2005 Which creature is the predator? ____________________ What evidence suggests this?

Which creature is the predator? Oscar fish What evidence suggests this? Which creature is the predator? Oscar fish What evidence suggests this? - their population trend follows that of the minnows What would you expect to happen to the population of Oscar fish if the population of minnows went down, and why?

What would you expect to happen to the population of Oscar fish if the population of minnows went down, and why? The population of Oscar fish would also decrease because they feed on the minnows. Other than the predator-prey relationship, describe 2 factors that could account for the change in the population of minnows from 1976 to 1984:

1) 2) Other than the predator-prey relationship, describe 2 factors that could account for the change in the population of minnows from 1976 to 1984: 1) Drought could cause their food supply to decrease 2)

Other than the predator-prey relationship, describe 2 factors that could account for the change in the population of minnows from 1976 to 1984: 1) Drought could cause their food supply to decrease 2) Disease could have hits the minnows and decreased their numbers.

When a plastic comb is rubbed with a piece of animal fur and is brought close to a fine stream of water from a tap, the stream of water will be (a) attracted to the comb. (b) repelled by the comb. (c) unaffected by the comb. (d) first attracted, then repelled.

When a plastic comb is rubbed with a piece of animal fur and is brought close to a fine stream of water from a tap, the stream of water will be (a) attracted to the comb. (b) repelled by the comb. (c) unaffected by the comb. (d) first attracted, then repelled.

Describe what would happen on a dry, cool day if you were to pet a long-haired cat for several seconds before reaching out to touch a metal doorknob. Why does this occur? Write your answer in complete sentences. Describe what would happen on a dry, cool day if you were to pet a long-haired cat for several seconds before reaching out to touch a metal doorknob. Why does this

occur? Write your answer in complete sentences. while petting the cat an exchange of electrons occurs Describe what would happen on a dry, cool day if you were to pet a long-haired cat for several seconds before reaching out to touch a metal doorknob. Why does this occur? Write your answer in complete sentences.

while petting the cat an exchange of electrons occurs you become negative and the fur becomes positive day if you were to pet a long-haired cat for several seconds before reaching out to touch a metal doorknob. Why does this occur? Write your answer in complete sentences. while petting the cat an exchange of

electrons occurs you become negative and the fur becomes positive you will build up a charge on your body that will be discharged if you touch a doorknob Which of the following is a good conductor? (a) silk (b) sand

(c) salt water (d) silver Which of the following is a good conductor? (a) silk (b) sand (c) salt water (d) silver When a negative rod is used to induce a

charge on an object, there is a flow of: (a) electrons from the rod into the object. (b) protons from the rod into the object. (c) electrons from the object to the ground. (d) protons from the object to the ground. When a negative rod is used to induce a charge on an object, there is a flow of: (a) electrons from the rod into the object. (b) protons from the rod into the object. (c) electrons from the object to the

ground. (d) protons from the object to the ground. You and a friend are standing in the middle of a football field as low-lying clouds begin to roll quickly into the area. You notice that your friend's hair suddenly begins to stand up. You feel that the same thing is happening to you. Even though it has not yet begun to rain, your friend shouts that you had better both get out of the area quickly because there will soon be lightning. Explain why hair standing up could be a

warning sign of a lightning strike. Write your answer in complete sentences. You and a friend are standing in the middle of a football field as low-lying clouds begin to roll quickly into the area. You notice that your friend's hair suddenly begins to stand up. You feel that the same thing is happening to you. Even though it has not yet begun to rain, your friend shouts that you had better both get out of the area quickly because there will soon be lightning. Explain why hair standing up could be a

warning sign of a lightning strike. Write your answer in complete sentences. a build up of charge is occurring on the ground You and a friend are standing in the middle of a football field as low-lying clouds begin to roll quickly into the area. You notice that your friend's hair suddenly begins to stand up. You feel that the same thing is happening to you. Even though it has not yet begun to rain, your friend shouts that you had better both get out of the area quickly because there will soon be lightning. Explain why hair

standing up could be a warning sign of a lightning strike. Write your answer in complete sentences. a build up of charge is occurring on the ground your hair starts to stand up because you are getting charged You and a friend are standing in the middle of a football field as low-lying clouds begin to roll quickly into the area. You notice that your friend's hair suddenly begins to stand up. You feel that the same thing is happening to you. Even

though it has not yet begun to rain, your friend shouts that you had better both get out of the area quickly because there will soon be lightning. Explain why hair standing up could be a warning sign of a lightning strike. Write your answer in complete sentences. a build up of charge is occurring on the ground your hair starts to stand up because you are getting charged you should get to a lower place or get out of the area quickly because a flow of charge is building

up You and a friend are standing in the middle of a football field as low-lying clouds begin to roll quickly into the area. You notice that your friend's hair suddenly begins to stand up. You feel that the same thing is happening to you. Even though it has not yet begun to rain, your friend shouts that you had better both get out of the area quickly because there will soon be lightning. Explain why hair standing up could be a warning sign of a lightning

strike. Write your answer in complete sentences. a build up of charge is occurring on the ground your hair starts to stand up because you are getting charged you should get to a lower place or get out of the area quickly because a flow of charge is building up the flow of charge is lightning Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its

corresponding name: _____ fuse _____ single cell _____ switch _____ 3 cells in series _____ resistor _____ ammeter _____ voltmeter _____ ground Match the electrical symbol in with the appropriate name

by writing the number of the symbol next to its corresponding name: __4__ fuse _____ single cell _____ switch _____ 3 cells in series _____ resistor _____ ammeter _____ voltmeter _____ ground

Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell _____ switch _____ 3 cells in series _____ resistor _____ ammeter _____ voltmeter _____ ground

Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell __3__ switch _____ 3 cells in series _____ resistor _____ ammeter _____ voltmeter

_____ ground Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell __3__ switch __2__ 3 cells in series _____ resistor _____ ammeter

_____ voltmeter _____ ground Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell __3__ switch __2__ 3 cells in series __9__ resistor

_____ ammeter _____ voltmeter _____ ground Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell __3__ switch __2__ 3 cells in series

__9__ resistor __5__ ammeter _____ voltmeter _____ ground Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell __3__ switch

__2__ 3 cells in series __9__ resistor __5__ ammeter __1__ voltmeter _____ ground Match the electrical symbol in with the appropriate name by writing the number of the symbol next to its corresponding name: __4__ fuse __8__ single cell

__3__ switch __2__ 3 cells in series __9__ resistor __5__ ammeter __1__ voltmeter __7__ ground When electrons are flowing through an electric circuit, the switch that controls the circuit must be

(a) open. (b) closed. (c) off. (d) ready. When electrons are flowing through an electric circuit, the switch that controls the circuit must be (a) open. (b) closed.

(c) off. (d) ready. The unit for measuring electric potential (potential difference) is the (a) ohm. (b) ampere. (c) joule. (d) volt.

The unit for measuring electric potential (potential difference) is the (a) ohm. (b) ampere. (c) joule. (d) volt. The unit for measuring

electric current is the (a) ampere. (b) volt. (c) coulomb. (d) ohm. The unit for measuring electric current is the (a) ampere. (b) volt. (c) coulomb.

(d) ohm. Which of the following is used to measure current? (a) Ohmmeter (b) Ammeter (c) Electric meter (d) Voltmeter Which of the following

is used to measure current? (a) Ohmmeter (b) Ammeter (c) Electric meter (d) Voltmeter The unit for measuring electrical resistance is the (a) ampere.

(b) volt. (c) coulomb. (d) ohm. The unit for measuring electrical resistance is the (a) ampere. (b) volt. (c) coulomb. (d) ohm.

The symbol used for the ohm is The symbol used for the ohm is This one!! What is the voltage drop across a room air conditioner if it has a resistance of 16.2 ohms and a

current of 6.8 A flowing through it? What is the voltage drop across a room air conditioner if it has a resistance of 16.2 ohms and a current of 6.8 A flowing through it? R = 16. 2 V = R x I I = 6.8 A = 16.2 x 6.8 A = 110.16 V

An electric crock-pot connected to a 120 V outlet has a resistance of 52 ohms. How much current does the crockpot use? An electric crock-pot connected to a 120 V outlet has a resistance of 52 ohms. How much current does the crockpot use? V = 120 V I =V

R = 52 R = 120 V 52 = 2.3 A The current required to operate a coffee maker is 7.5 A. What is its resistance when connected to a 120 V circuit?

The current required to operate a coffee maker is 7.5 A. What is its resistance when connected to a 120 V circuit? I = 7.5 A R= V V = 120 V I = 120 V

7.5 A = 16 The unit for measuring power is the (a) ampere. (b) watt. (c) volt. (d) joule. The unit for measuring

power is the (a) ampere. (b) watt. (c) volt. (d) joule. Calculate the power required for a cell phone call that uses 105 J of energy in 30 s. Calculate the power required for a

cell phone call that uses 105 J of energy in 30 s. E = 105 J t = 30 s P =E t = 105 J 30 s

= 3.5 W Calculate the power used by a microwave oven that uses 112 500 J of energy in 2.5 minutes. Calculate the power used by a microwave oven that uses 112 500 J of energy in 2.5 minutes. E = 112 500 J P = E t = 150 s

t = 112 500 J 150 s = 750 W Calculate the power of a coffee maker that operates at 120 V and draws 7.5 A. Calculate the power of a coffee maker that operates at 120 V and

draws 7.5 A. V = 120 V P = V x I I = 7.5 A = 120 V x 7.5 A = 900 W Calculate the power of a laptop computer that draws 3.0 A from a 7.5 V battery. Calculate the power of a laptop

computer that draws 3.0 A from a 7.5 V battery. I = 3.0 A P = V x I V = 7.5 V = 7.5 V x 3.0 A = 22.5 W How much current is drawn by a 40 W bulb in a 120 V circuit?

How much current is drawn by a 40 W bulb in a 120 V circuit? P = 40 W I = P V = 120 V V = 40 W 120 V = 0.33 A What voltage is required to

operate a 6.0 W cordless telephone that draws 0.50 A of current? What voltage is required to operate a 6.0 W cordless telephone that draws 0.50 A of current? P = 6.0 W V = P I = 0.50 A I

= 6.0 W 0.50 A = 12 V

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