题目内容

Which of the following best described the amount of electricity used in the United States is harnessed from wind?

A. less than 10%
B. between 10% and 15%
C. between 15% and 20%
D. between 20% and 25%
E. more than 25%

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Which source of energy is not ultimately solar based?

A. biomass
B. tides
C. wind
D. coal
E. hydroelectricity

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It currently takes about 3 units of coal to produce 1 unit of power. What will improve if the ratio becomes 1:1?

A. energy convervation
B. energy cogeneration
C. energy production
D. potential energy
E. energy efficiency

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Global fossil fuel use has shifted in recent decades. Which of the following is most accurate?

A. Coal is used more than natural gas.
B. Oil is used more than natural gas.
Coal is used more than oil.
D. Oil is used more than coal.
E. Natural gas is used more than coal.

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The mixture of sand and crude oil that is found near the surgace of the earth in the Alberta Oil Sands in Canada is called

A. kerogen.
B. bitumen.
C. lignite.
D. methane clathrates.
E. slag.

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Which of the following best described the amount of electricity used in the United States is harnessed from wind?

A. less than 10% B. between 10% and 15% C. between 15% and 20% D. between 20% and 25% E. more than 25%

Which source of energy is not ultimately solar based?

It currently takes about 3 units of coal to produce 1 unit of power. What will improve if the ratio becomes 1:1?

Global fossil fuel use has shifted in recent decades. Which of the following is most accurate?

The mixture of sand and crude oil that is found near the surgace of the earth in the Alberta Oil Sands in Canada is called

A. less than 10%
B. between 10% and 15%
C. between 15% and 20%
D. between 20% and 25%
E. more than 25%