The National Academies: What You Need To Know About Energy

The National Academies

What You Need To Know About Energy

What do you know about energy?

Which of the following is frequently used as a unit of measurement for the energy content of fuels?

  • 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.

  • 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.

  • 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.

  • 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.

True or False: U.S. domestic production of crude oil has declined since around 1970.

  • Correct!

    U.S. domestic production of crude oil peaked around 1970 at about 9.5 million barrels per day (MBD) and declined to about 5.1 MBD by 2006.

  • Sorry, that’s incorrect.

    U.S. domestic production of crude oil peaked around 1970 at about 9.5 million barrels per day (MBD) and declined to about 5.1 MBD by 2006.

What is the commonly accepted unit of measurement for electric current—or the amount of an electric charge passing a point per unit time?

  • Sorry, that’s incorrect.

    The ampere, or amp, is the most commonly used measurement for electric current.

  • Sorry, that’s incorrect.

    The ampere, or amp, is the most commonly used measurement for electric current.

  • Correct!

    The ampere, or amp, is the most commonly used measurement for electric current.

  • Sorry, that’s incorrect.

    The ampere, or amp, is the most commonly used measurement for electric current.

How much of the U.S. supply of natural gas is imported from outside North America?

  • Correct!

    Less than 2% of the U.S. supply of natural gas is imported from outside North America.

  • Sorry, that’s incorrect.

    Less than 2% of the U.S. supply of natural gas is imported from outside North America.

  • Sorry, that’s incorrect.

    Less than 2% of the U.S. supply of natural gas is imported from outside North America.

America, with 5% of the planet's population, consumes how much of the world's total energy?

  • Sorry, that’s incorrect.

    With 5% of the planet's population, the United States uses 20% of the world's total energy.

  • Sorry, that’s incorrect.

    With 5% of the planet's population, the United States uses 20% of the world's total energy.

  • Correct!

    With 5% of the planet's population, the United States uses 20% of the world's total energy.

Which of the following energy sources is not used to generate electricity in the United States?

  • Sorry, that’s incorrect.

    Oil, biofuels, natural gas, and coal are all used to generate electricity in the United States.

  • Sorry, that’s incorrect.

    Oil, biofuels, natural gas, and coal are all used to generate electricity in the United States.

  • Sorry, that’s incorrect.

    Oil, biofuels, natural gas, and coal are all used to generate electricity in the United States.

  • Sorry, that’s incorrect.

    Oil, biofuels, natural gas, and coal are all used to generate electricity in the United States.

  • Correct!

    Oil, biofuels, natural gas, and coal are all used to generate electricity in the United States.

Nuclear power provided what percentage of the total U.S. energy supply in 2008?

  • Sorry, that’s incorrect.

    Nuclear power accounted for 9% of the U.S. energy supply in 2008.

  • Correct!

    Nuclear power accounted for 9% of the U.S. energy supply in 2008.

  • Sorry, that’s incorrect.

    Nuclear power accounted for 9% of the U.S. energy supply in 2008.

True or False: Burning coal in electric power plants is a major source of CO2 and other emissions. However, its use doesn't have negative consequences beyond the emissions caused by combustion.

  • Sorry, that’s incorrect.

    Mining coal disturbs the land and modifies the chemistry of rainwater runoff, which in turn affects stream and river water quality.

  • Correct!

    Mining coal disturbs the land and modifies the chemistry of rainwater runoff, which in turn affects stream and river water quality.

Which residential usage consumes the largest amount of energy?

  • Sorry, that’s incorrect.

    Consuming the largest amount of energy, space heating accounts for 31% of all residential energy used. Space cooling accounts for an additional 12% of energy usage.

  • Sorry, that’s incorrect.

    Consuming the largest amount of energy, space heating accounts for 31% of all residential energy used. Space cooling accounts for an additional 12% of energy usage.

  • Correct!

    Consuming the largest amount of energy, space heating accounts for 31% of all residential energy used. Space cooling accounts for an additional 12% of energy usage.

  • Sorry, that’s incorrect.

    Consuming the largest amount of energy, space heating accounts for 31% of all residential energy used. Space cooling accounts for an additional 12% of energy usage.

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Energy Hands-on

Energy Defined

Kilowatt

One thousand watts, a watt being a unit of measure of power, or how fast energy is used. Kilowatts are typically used to describe intermediate quantities of power, such as power usage in a home.

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