APES Ch 19 Test Questions with Correct Answers (Grade A+)
Question 1: Initially we used ______________ (type of energy)
Answer: firewood (muscle-power animals)
Question 2: What two reasons caused a switch to coal?
Answer: 1850's steam engine, running out of wood
Question 3: During the last century, we have been switching to ____________.
Answer: oil (1950's started importing oil)
Question 4: work and energy are measured in
Answer: Joules (J)
Question 5: power is measured in
Answer: Watts (W)
Question 6: power =
Answer: work/time
Question 7: What do the following prefixes mean? Kilo Mega Giga
Answer: thousand million billion
Question 8: BTU stands for
Answer: British Thermal Unit
Question 9: What are the three types of fossil fuels and how much of the world's energy do they
contribute?
Answer: coal, oil, natural gas almost 80%
Question 10: What is coal and when was it created?
Answer: -organic remains (mostly plant) buried under intense heat and pressure in swamps -300 million +
years ago
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, Question 11: Why is coal a nonrenewable resource?
Answer: takes 300 million + years to form
Question 12: Why does burning coal release so many toxins? (and mining)
Answer: swamp environment contains S, Hg, Cd, and other metals taken up by plants
Question 13: What are the problems associated with underground mining?
Answer: cave-ins, explosions due to co-existent natural gas (methane), black lung disease
Question 14: Surface mining (strip mining) is usually cheaper and safer. What is it and what are its
problems?
Answer: -machines scrape off sediment and reveal coal -leaves large piles of discarded rock and soil
(contaminated), habitat destruction
Question 15: What is the most damaging mining technique?
Answer: mountaintop removal (appalachian)
Question 16: A little more than ________ of all of the energy produced in the U.S. comes from coal.
Answer: 1/3
Question 17: Burning coal produces large quantities of carbon dioxide plus what other kinds of
pollutants?
1. toxic metals released into the air:
2. other compounds released into the air:
3. radioactivity from:
4. stored coal ash sludge that can get into waterways releasing:
Answer: 1. Hg, Pb, and others 2. NOx and SOx 3. Uranium and others (thorium) 4. heavy metals
Question 18: What are the 3 reasons coal use is in decline in the U.S.? (#1)
Answer: improved technology in sustainable energy (less costly)
Question 19: What are the 3 reasons coal use is in decline in the U.S.? (#2)
Answer: Aging plants - too much $ to fix to meet health standards
Page 2
Question 1: Initially we used ______________ (type of energy)
Answer: firewood (muscle-power animals)
Question 2: What two reasons caused a switch to coal?
Answer: 1850's steam engine, running out of wood
Question 3: During the last century, we have been switching to ____________.
Answer: oil (1950's started importing oil)
Question 4: work and energy are measured in
Answer: Joules (J)
Question 5: power is measured in
Answer: Watts (W)
Question 6: power =
Answer: work/time
Question 7: What do the following prefixes mean? Kilo Mega Giga
Answer: thousand million billion
Question 8: BTU stands for
Answer: British Thermal Unit
Question 9: What are the three types of fossil fuels and how much of the world's energy do they
contribute?
Answer: coal, oil, natural gas almost 80%
Question 10: What is coal and when was it created?
Answer: -organic remains (mostly plant) buried under intense heat and pressure in swamps -300 million +
years ago
Page 1
, Question 11: Why is coal a nonrenewable resource?
Answer: takes 300 million + years to form
Question 12: Why does burning coal release so many toxins? (and mining)
Answer: swamp environment contains S, Hg, Cd, and other metals taken up by plants
Question 13: What are the problems associated with underground mining?
Answer: cave-ins, explosions due to co-existent natural gas (methane), black lung disease
Question 14: Surface mining (strip mining) is usually cheaper and safer. What is it and what are its
problems?
Answer: -machines scrape off sediment and reveal coal -leaves large piles of discarded rock and soil
(contaminated), habitat destruction
Question 15: What is the most damaging mining technique?
Answer: mountaintop removal (appalachian)
Question 16: A little more than ________ of all of the energy produced in the U.S. comes from coal.
Answer: 1/3
Question 17: Burning coal produces large quantities of carbon dioxide plus what other kinds of
pollutants?
1. toxic metals released into the air:
2. other compounds released into the air:
3. radioactivity from:
4. stored coal ash sludge that can get into waterways releasing:
Answer: 1. Hg, Pb, and others 2. NOx and SOx 3. Uranium and others (thorium) 4. heavy metals
Question 18: What are the 3 reasons coal use is in decline in the U.S.? (#1)
Answer: improved technology in sustainable energy (less costly)
Question 19: What are the 3 reasons coal use is in decline in the U.S.? (#2)
Answer: Aging plants - too much $ to fix to meet health standards
Page 2
