Chapter 8: Energy Sources and the Environment

Front

According to the law of conservation of energy, energy cannot be.

Back

created or destroyed

Front

The greatest percentage of energy used in the United States is utilized for: transportation, heating homes and operating appliances, manufacturing products and producing food, providing electricity to businesses and office buildings.

Back

manufacturing products and producing food

Front

Which of the following contains the most usable energy per kilogram? asphalt, coal, natural gas, petroleum

Back

natural gas

Front

What occurs first during the conversion of fossil fuels to electricity in an electrical power station?

Back

Fuel is burned in a combustion chamber.

Front

Which statement about fossil fuels is true?

Back

The smoke produced from burning fossil fuels contains particulates.

Front

A(n) ______ is a resource that is replaced by natural processes nearly as quickly as it is used.

Back

renewable resource

Front

What do solar cells utilize to eject electrons when sunlight strikes them?

Back

semiconductor materials

Front

Which of the following is true of solar energy?

Back

Producing electricity using solar cells is expensive.

Front

Electricity produced from the energy of moving water is called __________.

Back

hydroelectricity

Front

Which of the following is not true of tidal power plants?

Back

Generating electricity from tidal motion creates large amounts of water pollution.