The National Academies
What You Need To Know About Energy
What do you know about energy?
America, with 5% of the planet's population, consumes how much of the world's total energy?
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With 5% of the planet's population, the United States uses 20% of the world's total energy.
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Sorry, that’s incorrect.
With 5% of the planet's population, the United States uses 20% of the world's total energy.
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Correct!
With 5% of the planet's population, the United States uses 20% of the world's total energy.
In 2008, approximately how much of the oil used in the U.S. was imported?
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Sorry, that’s incorrect.
In 2008, the U.S. imported about 66% of its oil supply. This percentage is expected to grow even higher over the next two decades.
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Sorry, that’s incorrect.
In 2008, the U.S. imported about 66% of its oil supply. This percentage is expected to grow even higher over the next two decades.
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Correct!
In 2008, the U.S. imported about 66% of its oil supply. This percentage is expected to grow even higher over the next two decades.
Which of the following is frequently used as a unit of measurement for the energy content of fuels?
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Correct!
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
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Sorry, that’s incorrect.
The British Thermal Unit, or Btu, is frequently used as a measure for energy content of fuels. One gallon of gasoline contains about 124,000 Btu.
About 21% of the electricity used in residential and commercial buildings goes to what use?
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Roughly 21% of the electricity used in residential and commercial buildings goes to lighting.
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Sorry, that’s incorrect.
Roughly 21% of the electricity used in residential and commercial buildings goes to lighting.
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Correct!
Roughly 21% of the electricity used in residential and commercial buildings goes to lighting.
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Sorry, that’s incorrect.
Roughly 21% of the electricity used in residential and commercial buildings goes to lighting.
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).
What percentage of the coal mined in the United States was used to generate electricity in 2006?
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Sorry, that’s incorrect.
90% of the coal mined in the United States was used to generate electricity in 2006.
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Sorry, that’s incorrect.
90% of the coal mined in the United States was used to generate electricity in 2006.
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Correct!
90% of the coal mined in the United States was used to generate electricity in 2006.
How much of the U.S. supply of natural gas is imported from outside North America?
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Correct!
Less than 2% of the U.S. supply of natural gas is imported from outside North America.
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Sorry, that’s incorrect.
Less than 2% of the U.S. supply of natural gas is imported from outside North America.
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Sorry, that’s incorrect.
Less than 2% of the U.S. supply of natural gas is imported from outside North America.
As an automobile fuel, what amount of hydrogen compares with a gallon of gasoline?
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Correct!
A gallon of gasoline contains about the same energy as a kg of hydrogen. Although fuel cells are expected to be twice as efficient as gasoline vehicles, hydrogen is very diffuse and storing an ample supply on board represents an engineering challenge.
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Sorry, that’s incorrect.
A gallon of gasoline contains about the same energy as 1 kg of hydrogen. Although fuel cells are expected to be twice as efficient as gasoline vehicles, hydrogen is very diffuse and storing an ample supply on board represents an engineering challenge.
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Sorry, that’s incorrect.
A gallon of gasoline contains about the same energy as 1 kg of hydrogen. Although fuel cells are expected to be twice as efficient as gasoline vehicles, hydrogen is very diffuse and storing an ample supply on board represents an engineering challenge.
Combustion of gasoline and diesel fuel emits which of the following?
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All of the above are emitted by vehicles running on gasoline and diesel fuel.
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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.
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