The National Academies
What You Need To Know About Energy
What do you know about energy?
According to the Corporate Average Fuel Economy (CAFE) standards updated in December 2007, what is the average miles per gallon (mpg) required for new cars, SUVs, and light trucks (combined) by 2020?
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Sorry, that’s incorrect.
Based upon the 2007 CAFE standards, the new average mpg required by 2020 is 35 mpg.
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Correct!
Based upon the 2007 CAFE standards, the new average mpg required by 2020 is 35 mpg.
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Sorry, that’s incorrect.
Based upon the 2007 CAFE standards, the new average mpg required by 2020 is 35 mpg.
Energy intensity is a measure of:
- The amount of energy used by a nation per unit of GDP
- The amount of energy contained in a given amount of fuel
- The amount of electric current passing through a point
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Correct!
Energy intensity is a measure of a nation's energy efficiency represented through energy use per unit of GDP (Gross Domestic Product).
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Sorry, that’s incorrect.
Energy intensity is a measure of a nation's energy efficiency represented through energy use per unit of GDP (Gross Domestic Product).
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Sorry, that’s incorrect.
Energy intensity is a measure of a nation's energy efficiency represented through energy use per unit of GDP (Gross Domestic Product).
Combustion of gasoline and diesel fuel emits which of the following?
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Sorry, that’s incorrect.
All of the above are emitted by vehicles running on gasoline and diesel fuel.
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Sorry, that’s incorrect.
All of the above are emitted by vehicles running on gasoline and diesel fuel.
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Sorry, that’s incorrect.
All of the above are emitted by vehicles running on gasoline and diesel fuel.
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Sorry, that’s incorrect.
All of the above are emitted by vehicles running on gasoline and diesel fuel.
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Correct!
All of the above are emitted by vehicles running on gasoline and diesel fuel.
Of the following fossil fuels, which is typically the least expensive for its energy content?
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Sorry, that’s incorrect.
In 2005, a million Btu of energy from coal cost approximately $2, versus $5 for natural gas and $10 for oil. However, prices can fluctuate due to changes in the economy and new government policies.
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Sorry, that’s incorrect.
In 2005, a million Btu of energy from coal cost approximately $2, versus $5 for natural gas and $10 for oil. However, prices can fluctuate due to changes in the economy and new government policies.
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Correct!
In 2005, a million Btu of energy from coal cost approximately $2, versus $5 for natural gas and $10 for oil. However, prices can fluctuate due to changes in the economy and new government policies.
Most of the world's energy originates from which two primary sources:
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Correct!
The energy we capture for use on Earth comes largely from the sun or from nuclear forces local to our own planet.
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Sorry, that’s incorrect.
The energy we capture for use on Earth comes largely from the sun or from nuclear forces local to our own planet.
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Sorry, that’s incorrect.
The energy we capture for use on Earth comes largely from the sun or from nuclear forces local to our own planet.
What percentage of America's total energy came from wind in 2008?
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Correct!
In 2008, wind accounted for 0.5% of America's energy portfolio.
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Sorry, that’s incorrect.
In 2008, wind accounted for 0.5% of America's energy portfolio.
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Sorry, that’s incorrect.
In 2008, wind accounted for 0.5% of America's energy portfolio.
Which of the following is considered an obstacle to cars running on hydrogen fuel cells?
- Cost of fuel cells
- Difficulty storing and transporting hydrogen
- Process of collecting pure hydrogen
- All of the above
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Sorry, that’s incorrect.
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
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Correct!
All of the reasons mentioned are considered obstacles to producing cars that run on hydrogen fuel cells.
True or False: Increasing the energy supply is the only answer to a stable energy future.
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Sorry, that’s incorrect.
Reducing demand through the improved efficiency of devices and procedures is another way to improve our energy situation.
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Correct!
Reducing demand through the improved efficiency of devices and procedures is another way to improve our energy situation.
Which energy sources together account for 84% of the energy used in the United States?
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Sorry, that’s incorrect.
Fossil fuels (petroleum, natural gas, and coal) account for 84% of the energy used in the United States.
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Correct!
Fossil fuels (petroleum, natural gas, and coal) account for 84% of the energy used in the United States.
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Sorry, that’s incorrect.
Fossil fuels (petroleum, natural gas, and coal) account for 84% of the energy used in the United States.
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