ENVS 1126 Exam 3
Study online at https://quizlet.com/_i2g3ap
1. 2nd law of thermodynamics (and what that means): The entropy of the universe always
increases
(in every energy transformation, usable energy is lost as heat, which escapes to space)
2. 3 fossil fuels: coal, oil, natural gas
3. energy for fossil fuels comes from: the sun
4. what are the chemical equations for the making and burning of fossil fuels: -
CO2 + H2O + light -> C6H12O6 + O2
CH4 + O2 -> CO2 + H2O + energy
5. coal age range: millions - hundreds of millions years old
6. eventually called for fossil fuels to replace their old energy source (1700's): -
steam engine
7. by 1920 coal accounted for __% of energy: 80
8. now, coal accounts for __% of energy: 20
9. coal took the place of: firewood
10. coal is bad bc: -smoke pollutes cities
-hazardous to mine/dirty
-steam engines are big
11. oil was an alternative to: coal
12. what allowed coal to be an option: -internal combustion engines
-drilling
-refinement
13. benefits of oil: -cleaner than coal
-gas engine lighter than steam engine
14. __________ is now the major energy source for the world: oil
15. natural gas is mostly ______________ and produces ______________ when
burned: methane
CO2 and water
16. natural gas benefits; and one drawback: cleanest
inexpensive and convenient
-not good for transportation
1/8
, ENVS 1126 Exam 3
Study online at https://quizlet.com/_i2g3ap
17. gas provides __% of US energy and __% world energy: 28
24
18. global energy supply (highest % to lowest): oil (33)
coal (30)
natural gas (24)
hydro (7)
nuclear (4)
renewable (2)
19. primary energy sources are used to produce: electricity
20. michael faraday: invented generators in 1831
21. electric generator: -heat -> steam turns turbine -> coil of wire rotates within a magnetic field (or the
magnetic field rotates) -> electricity
-converts mechanical energy into electrical
22. electric generators use _________ as an energy source: fossil fuels
23. coal is on the: decline (fuk u trump)
24. baseload: the constant supply of power provided by large coal-burning and nuclear power plants
25. as demand for electricity rises during the day, __________________ power
sources that can be turned on and off are used
(what are their sources): intermediate/peak-load
(gas, diesel, hydroelectric)
26. primary energy sources used to generate ______________ electricity are not
easily substituted by renewable options: baseload power
27. major uses of energy: transportation
industry
commercial
residential
28. each person requires a mix of energy sources, so nations require
_________________ to run their economies: trade (imports and exports) of fossil fuels
29. US has adequate _____________ but we import half of our _________: coal and natura
gas
crude oil
30. in 2016, the us imported ___________ barrels of oil per day: 10 million
2/8
Study online at https://quizlet.com/_i2g3ap
1. 2nd law of thermodynamics (and what that means): The entropy of the universe always
increases
(in every energy transformation, usable energy is lost as heat, which escapes to space)
2. 3 fossil fuels: coal, oil, natural gas
3. energy for fossil fuels comes from: the sun
4. what are the chemical equations for the making and burning of fossil fuels: -
CO2 + H2O + light -> C6H12O6 + O2
CH4 + O2 -> CO2 + H2O + energy
5. coal age range: millions - hundreds of millions years old
6. eventually called for fossil fuels to replace their old energy source (1700's): -
steam engine
7. by 1920 coal accounted for __% of energy: 80
8. now, coal accounts for __% of energy: 20
9. coal took the place of: firewood
10. coal is bad bc: -smoke pollutes cities
-hazardous to mine/dirty
-steam engines are big
11. oil was an alternative to: coal
12. what allowed coal to be an option: -internal combustion engines
-drilling
-refinement
13. benefits of oil: -cleaner than coal
-gas engine lighter than steam engine
14. __________ is now the major energy source for the world: oil
15. natural gas is mostly ______________ and produces ______________ when
burned: methane
CO2 and water
16. natural gas benefits; and one drawback: cleanest
inexpensive and convenient
-not good for transportation
1/8
, ENVS 1126 Exam 3
Study online at https://quizlet.com/_i2g3ap
17. gas provides __% of US energy and __% world energy: 28
24
18. global energy supply (highest % to lowest): oil (33)
coal (30)
natural gas (24)
hydro (7)
nuclear (4)
renewable (2)
19. primary energy sources are used to produce: electricity
20. michael faraday: invented generators in 1831
21. electric generator: -heat -> steam turns turbine -> coil of wire rotates within a magnetic field (or the
magnetic field rotates) -> electricity
-converts mechanical energy into electrical
22. electric generators use _________ as an energy source: fossil fuels
23. coal is on the: decline (fuk u trump)
24. baseload: the constant supply of power provided by large coal-burning and nuclear power plants
25. as demand for electricity rises during the day, __________________ power
sources that can be turned on and off are used
(what are their sources): intermediate/peak-load
(gas, diesel, hydroelectric)
26. primary energy sources used to generate ______________ electricity are not
easily substituted by renewable options: baseload power
27. major uses of energy: transportation
industry
commercial
residential
28. each person requires a mix of energy sources, so nations require
_________________ to run their economies: trade (imports and exports) of fossil fuels
29. US has adequate _____________ but we import half of our _________: coal and natura
gas
crude oil
30. in 2016, the us imported ___________ barrels of oil per day: 10 million
2/8
