Exam 11 2020, questions and answers PDF

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1 is : a) Power b) A force of nature c) Amount of momentum d) The ability to do work If you double the speed of an object how does its kinetic energy change? a) Stays the same b) It doubles c) It triples d) It quadruples Which of the following could NOT be a unit of power? a) Joules per second b) Wa...

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1.Energy is : a) Power b) A force of nature c) Amount of momentum d) The ability to do work 2. If you double the speed of an object how does its kinetic energy change? a) Stays the same b) It doubles c) It triples d) It quadruples 3. Which of the following could NOT be a unit of power? a) Joules per second b) Watts c) Calories per hour d) Joules

4. Home appliances that produce heat tend to be low power. a) True b) False 5. A process that occurs spontaneously in one direction is called a) Reversible b) Irreversible c) Undeniable d) Insatiable

6. Only a small percentage of the electricity we use in produced by converting mechanical energy into electrical energy a) True b) False

7. Most countries depend on fossil fuels for more than 50% of their energy needs. a) True b) False

8. Energy use per person is much higher a) In highly developed countries b) In less developed countries

9. In which hemisphere are most of the known coal reserves found? a) Northern b) Southern c) It is approximately equal 10. There hasn't been a major mining accident in canada since the 1970’s a) True b) False 11. Light intensity is a) The energy of the light on some area b) The momentum of a light wave c) The total energy of all the light captured d) The power divided by the area over which the light shines 12. A flat plate collector is similar to the small solar panel in a calculator and takes the sun’s energy and turns it into usable electricity. a) True b) False

13. In the future with better engineering we could have propellor style windmills with efficiencies of up to 75% a) True b) False

14. Canada is one of the top 3 countries in terms of total power produced by wind a) True b) False

15. Spent nuclear fuel has been used up and therefore is no longer radioactive. a) True b) False

16. The total fraction of energy generated by nuclear power worldwide is predicted to increase by 2040. a) True b) False 17. A good home insulation will not be good at transferring heat. a) True b) False

18. The standard that certifies energy efficient products is called a) Energy star b) Green star c) Canadenergy d) GreenLite 19. What compound is produced by incomplete combustion of fossil carbon? a) CO2 b) CO c) NO2 d) N2

20. Which of the following is a primary pollutant? a) SO2

b) SO3 c) Sulphuric Acid 21. In the last 100 years, overall, the average distribution of marine taxonomic groups has a) Shifted towards colder water regions b) Shifted towards warmer water regions c) Not changed significantly

22. The ratio of different types of carbon in the atmosphere tells us a) That the increase in atmospheric CO2 is from very old sources b) That CO2 levels have increased since the 1800s c) Nothing about the source of atmospheric CO2 23. A stabilization wedge is a) A strategy that could correspond to no warming by 2050 b) A strategy that could correspond to about a 1 billion ton CO2 reduction by 2050 c) The amount of CO2 that is needed in order to have a stable temperature d) A block of wood used to stop a door from closing 24. Climate change related changes in precipitation are predicted to a) Be uniform b) Increase precipitation in dry regions c) Increase precipitation in wet regions 25. Saying “the electromagnetic spectrum” is the same as saying “visible light”. a) True b) False 26. How is the majority of electricity produced in Canada? a) Solar b) Coal

c) Uranium d) Hydro 27. Per BTU of energy, how does the cost of natural gas compare to the cost of gasoline? a) Gasoline is about 4 times more expensive than natural gas. b) Gasoline is about 2 times more expensive than natural gas. c) Gasoline is about 2 times less expensive than natural gas. d) Gasoline is about 4 times less expensive than natural gas. 28. Saying “the electromagnetic spectrum ” is the same as saying “visible light”. a) True b) False

29. The sun’s energy reaches Earth in the form of a) Chemical energy b) Thermal energy c) Nuclear energy d) Electrical energy e) Electromagnetic energy

30 . A clothes dryer consumes 2500 watts of energy. In 2 seconds how much energy does the dryer use? a) 2500 watts b) 2500 joules c) 5000 watts d) 5000 joules

31. You lift a cat from the ground up to a shelf 2 metres above the ground. Which is a description of the energy flow? a) Thermal -> electrical b) Thermal -> potential c) Kinetic -> electromagnetic

d) Chemical -> gravitational

32. Your little sister drops a bag of candy on your head from the roof of your house. Right before it hits your head it is moving quickly. Which describes the candy’s energy, from roof to head? a) The candy has lost kinetic energy and gained potential energy b) The candy has lost potential energy and gained kinetic energy c) The candy has not lost or gained potential energy d) The candy has not lost or gained kinetic energy 33. Only a small percentage of the electricity produced is used by converting mechanical energy into electrical energy a) True b) False

34. A battery contains 1000 joules of energy. The maximum amount of work it can do is 1000 joules. This is an example of a) The law of conservation of energy b) The first law of thermodynamics c) Neither the first law of thermodynamics nor the law of conservation of energy d) Both the first law of thermodynamics and the law of conservation of energy

35. In Canada from 2014-2040 which sector is expected to see the largest decrease in growth rate? 1.Energy is : e) Power f) A force of nature g) Amount of momentum h) The ability to do work 2. If you double the speed of an object how does its kinetic energy change? e) Stays the same f) It doubles g) It triples

h) It quadruples

3. Which of the following could NOT be a unit of power? e) Joules per second f) Watts g) Calories per hour h) Joules 4. Home appliances that produce heat tend to be low power. c) True d) False

5. A process that occurs spontaneously in one direction is called e) Reversible f) Irreversible g) Undeniable h) Insatiable 6. Only a small percentage of the electricity we use in produced by converting mechanical energy into electrical energy c) True d) False 7. Most countries depend on fossil fuels for more than 50% of their energy needs. c) True d) False 8. Energy use per person is much higher c) In highly developed countries d) In less developed countries

9. In which hemisphere are most of the known coal reserves found? d) Northern

e) Southern f) It is approximately equal 10. There hasn't been a major mining accident in canada since the 1970’s c) True d) False 11. Light intensity is e) The energy of the light on some area f) The momentum of a light wave g) The total energy of all the light captured h) The power divided by the area over which the light shines 12. A flat plate collector is similar to the small solar panel in a calculator and takes the sun’s energy and turns it into usable electricity. c) True d) False 13. In the future with better engineering we could have propellor style windmills with efficiencies of up to 75% c) True d) False 14. Canada is one of the top 3 countries in terms of total power produced by wind c) True d) False 15. Spent nuclear fuel has been used up and therefore is no longer radioactive. c) True d) False

16. The total fraction of energy generated by nuclear power worldwide is predicted to increase by 2040.

c) True d) False 17. A good home insulation will not be good at transferring heat. c) True d) False

18. The standard that certifies energy efficient products is called e) Energy star f) Green star g) Canadenergy h) GreenLite

19. What compound is produced by incomplete combustion of fossil carbon? e) CO2 f) CO g) NO2 h) N2 20. Which of the following is a primary pollutant? d) SO2 e) SO3 f) Sulphuric Acid 21. In the last 100 years, overall, the average distribution of marine taxonomic groups has d) Shifted towards colder water regions e) Shifted towards warmer water regions f) Not changed significantly

22. The ratio of different types of carbon in the atmosphere tells us d) That the increase in atmospheric CO2 is from very old sources

e) That CO2 levels have increased since the 1800s f) Nothing about the source of atmospheric CO2 23. A stabilization wedge is e) A strategy that could correspond to no warming by 2050 f) A strategy that could correspond to about a 1 billion ton CO2 reduction by 2050 g) The amount of CO2 that is needed in order to have a stable temperature h) A block of wood used to stop a door from closing 24. Climate change related changes in precipitation are predicted to d) Be uniform e) Increase precipitation in dry regions f) Increase precipitation in wet regions

25. Saying “the electromagnetic spectrum” is the same as saying “visible light”. c) True d) False 26. How is the majority of electricity produced in Canada? e) Solar f) Coal g) Uranium h) Hydro 27. Per BTU of energy, how does the cost of natural gas compare to the cost of gasoline? e) Gasoline is about 4 times more expensive than natural gas. f) Gasoline is about 2 times more expensive than natural gas. g) Gasoline is about 2 times less expensive than natural gas. h) Gasoline is about 4 times less expensive than natural gas. 28. Saying “the electromagnetic spectrum

” is the same as saying “visible light”. c) True d) False 29. The sun’s energy reaches Earth in the form of f) Chemical energy g) Thermal energy h) Nuclear energy i) Electrical energy j) Electromagnetic energy 30 . A clothes dryer consumes 2500 watts of energy. In 2 seconds how much energy does the dryer use? e) 2500 watts f) 2500 joules g) 5000 watts h) 5000 joules 31. You lift a cat from the ground up to a shelf 2 metres above the ground. Which is a description of the energy flow? e) Thermal -> electrical f) Thermal -> potential g) Kinetic -> electromagnetic h) Chemical -> gravitational

32. Your little sister drops a bag of candy on your head from the roof of your house. Right before it hits your head it is moving quickly. Which describes the candy’s energy, from roof to head? e) The candy has lost kinetic energy and gained potential energy f) The candy has lost potential energy and gained kinetic energy g) The candy has not lost or gained potential energy h) The candy has not lost or gained kinetic energy 33. Only a small percentage of the electricity produced is used by converting

mechanical energy into electrical energy c) True d) False 34. A battery contains 1000 joules of energy. The maximum amount of work it can do is 1000 joules. This is an example of e) The law of conservation of energy f) The first law of thermodynamics g) Neither the first law of thermodynamics nor the law of conservation of energy h) Both the first law of thermodynamics and the law of conservation of energy 35. In Canada from 2014-2040 which sector is expected to see the largest decrease in growth rate? a) Residential b) Commercial c) Transportation d) Industrial 36. Canada uses less energy per person than the U.S. a) True b) False

37. Which countries have the highest percent use of renewable energy? a) Low income countries b) Middle income countries c) High income countries 38. In a structural trap oil is trapped between a) A lower layer of porous rock and an upper layer of non-porous rock b) Two layers of non-porous rock c) An upper layer of porous rock and a lower layer of non-porous rock d) Two layers of porous rock 39. On a clear day about how much of the light hitting the Earth makes it to

the surface? a) 14% b) 24% c) 44% d) 34% 40. The intensity of sunlight at Mercury is greater than the intensity of sunlight at Venus because a) Venus is larger b) Mercury is closer to the sun c) Mercury is larger d) Venus is closer to the sun 41. Of the following, what could be used to store the heat from passive solar heating? a) Solar panels b) Containers of water c) Photovoltaic solar cells d) Reflective glass windows 42. The sun's energy is thought of as a renewable energy source because a) Because the sun's energy is in the form of light making it environmentally friendly b) We cannot capture and use all the energy from the sun c) Because the sun's lifetime is very long d) The sun will last indefinitely 43. There are global regions which have not been affected by climate change. a) False b) True 44. Without humans there would be no greenhouse effect. a) False b) True

45. Today’s weather can tell us if climate change is real. a) False b) True

46. Greenhouse gasses are gasses that a) Are transparent to both visible light and infrared light b) Absorb both visible light and infrared light c) Are transparent to visible light but absorb infrared light d) Are transparent to infrared light but absorb visible light 47. A calorie is a) The work done by a one newton force over one metre b) Unit of energy that only applies to food c) The amount of energy required to raise the temperature of one gram of water by one degree celsius d) Amount of heat energy required to raise the temperature of one pound of water by one degree fahrenheit 48. Which of the following is an advantage of subsurface mining? a) It is less expensive b) It is faster c) There is less of a surface impact d) It is safer 49. When petroleum products are refined they get separated according to a) Their viscosities b) Their densities c) Their colours d) Their boiling points 50. Considering only the amount of solar energy available,in which region would it make the most sense to develop solar energy production? a) Northern quebec b) West coast of British Columbia

c) The maritime provinces d) Southern saskatchewan

51. If the total energy of a system increases this does not necessarily mean that energy was added to the system. a) False b) true 52. According to the Law of Conservation of Energy if solar panels use the sun’s energy in Arizona, then there will be less solar energy for us to use in canada. a) True b) false 53. Hydraulic fracturing (or fracking) uses acids dissolved in water to breakdown the rock and release the hydrocarbons for extraction. a) True b) False 54. What fraction of canada’s 2015 electricity production was from solar energy? a) 10% b) 20% c) 30% d) 1% 55. What percentage of canada's energy consumption is in the form of alternative/nuclear energy? a) About 25% b) About 50% c) Almost zero d) About 75%

e) Almost all

56. Fossil fuels are not a renewable resource because a) They are bad for the environment b) They are hard to extract from earth c) They cause too many emissions d) They take 100s millions of years to produce 57. Which of the following is NOT a main product in the combustion of hydrocarbons? a) Heat energy b) Carbon dioxide c) Water d) Oxygen gas

58. Without a temperature difference between a heat source and heat sink, it is impossible to run a heat engine. a) False b) True 59. The amount of energy released per 100 grams of fuel burned in a reaction is called a) The latent heat b) The reactions efficiency c) The heat of combustion d) The heat of transformation 60. The sun's energy is produced by a) Burning of hydrogen b) Nuclear fission c) Nuclear fusion

61. The metric unit of energy is a) The calorie

b) The BTU c) The electron volt d) The Joule 62. The Law of Conservation of Energy a) Is a possible means for extending fossil fuel use b) Does not apply to earth systems c) Is obeyed in chemical reactions but not nuclear reactions d) Is a fundamental law of physics with no known exceptions 63. Which region has the largest growth in coal consumption recently? a) Europe b) Africa c) asia

64. The “c” in E=mc2 refers to a) The mass of light b) An electric charge c) Speed of light 65. In an isolated system the entropy of the system increases over time a) True b) False 66. As entropy of a system increases, total amount of useful energy decreases. a) True b) False 67. In a system with is NOT isolated the total amount of energy must stay constant. a) False b) True 68. You are camping and you start a wood fire and use it to boil some water in a pot. What is the flow of energy?

(choose from Chemical, Thermal, Electrical, Nuclear, Electromagnetic, Kinetic) Correct answer: *Chemical*Thermal* 69. What percentage of Canada’s energy consumption is in the form if fossil fuels? a.

almost zero

b.

about 25%

c.

about 50%

d.

about 75%

e.

almost all

70. You lift a cat from the ground up to a shelf 2 metres above the ground. Which is a description of the energy flow?

1. Thermal energy —> Electrical energy 2. Thermal energy —> Potential energy 3. Kinetic energy —> Electromagnetic energy 4. Chemical energy —> Gravitational potential energy

71. Which of the following is part of a home designed with passive solar heating? a.

a greenhouse

b.

little insulation

c.

south facing windows

d.

use of solar collectors on the roof

e.

mirrors and lenses

72. A chair is sliding across a rough horizontal floor. The chair starts with 100J of kinetic energy and slows down and comes to a stop. What happened to the kinetic energy of the chair? a.

Kinetic energy ever only lasts for short amounts of time.

b.

The kinetic energy was transformed into heat due to the friction with the floor.

c.

The kinetic energy was transformed into gravitational potential energy.

d.

The chair’s kinetic energy did not change.

73. Which of the following is NOT a main product in the combustion of hydrocarbons? 1. heat energy 2. oxygen gas 3. carbon dioxide

4. Water 74. Only a small percentage of the electricity we use is produced by converting mechanical energy into electrical energy 1. True 2. False 75. For heat engines, the larger the temperature difference between the heat source and the heat sink, the higher the best possible efficiency. 1. True 2. False 76. Entropy never spontaneously increases. 1. False 2. True 77. In Canada from 2014-2040 which sector is expected to see the largest decrease in growth rate? 1. 2. 3. 4.

Industrial Commercial Residential Transportation

78. Per BTU of energy, how does the cost of natural gas compare to the cost of gasoline? 1. 2. 3. 4.

Gasoline is about 4 times less expensive than natural gas. Gasoline is about 2 times more expensive than natural gas. Gasoline is about 4 times more expensive than natural gas. Gasoline is about 2 times less expensive than natural gas.

79. The sun's energy is thought of as a renewable energy source because 1. we cannot capture and use all the energy from the sun. 2. because the sun will last indefinitely. 3. because the sun’s energy is in the form of light making it environmentally friendly. 4. because the sun’s lifetime is very very long.

80. Considering only the amount of solar energy available, in which region would it make the most sense to develop solar energy production? 1. 2. 3. 4.

Southern Saskatchewan Northern Quebec West coast of British Columbia The maritime provinces

81. Which of the following is NOT a factor that will decrease the amount of time that the world’s oil supply might last? a. b. c. d.

World energy demand is increasing. Demand is increasing faster than the growth of alternative energy. We will not discover new oil reserves in the future. Most oil reserves are in decline.

82. Power is a. b. c. d.

the amount of energy. the rate at which energy is produced or consumed. measured in joules. not well defined in physics.

83. Tight resources are oil and natural gas deposits that are a. b. c. d.

not accessible until will develop better technology for extraction. diff...