5.7C Alternative Energies

The poster shows advertises tours of a power plant. This power plant produces electricity most likely using...

• fossil fuels

• biofuels

• solar energy

• geothermal energy

Many cities are taking actions to cause less harm to the environment. Which action produces energy from an alternative source?

• Burning coal to heat homes

• Replacing lawns with plants that require less water

• Using biofuels to generate electricity

• Building a new water-treatment plant to improve water quality

Which of the methods of generating electricity shown below does NOT use alternative energy resources?

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Which alternative energy source is generated beneath Earth's crust and can be used to heat buildings?

• Hydroelectric energy

• Geothermal energy

• Wind energy

• Solar energy

An energy company wants to build a hydroelectric power plant. Which of these characteristics of an area is most important to the development of a hydroelectric power plant?

• The area has a cool, rainy climate

• The area is located in a valley with very little wind and frequent heavy fog

• The area has a river that flows rapidly from nearby mountains and through a valley

• The area has no geysers or hot springs.

A group of fifth graders students was researching alternative energy resources in the school library. Each student made a list of resources. Which list contains only alternative energy resources?

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Citizens in a community were surveyed about the type of energy resource they would like for a new power plant. The results of the survey are shown in the table above. How many citizens chose alternative energy resources?

• 257

• 485

• 850

• 365

Most alternative energy resources produce more energy at certain times. Which combination can produce a steady flow of energy from only alternative resources 24 hours a day year-round?

• Geothermal and natural gas

• Hydroelectric and geothermal

• Solar and petroleum

• Wind and coal

Some buildings and homes are heated by energy produced from an alternative to fossil fuels. Which of these is an example of a building or home heated using an alternative energy source?

• A home heated by energy generated by a hydroelectric dam

• A building that has emergency electric generators that run on gasoline.

• A home heated by energy produced from a coal power plant in a city

• A building that has furnaces powered by natural gas

Which of these shows a person using alternative energy source to perform a task?

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