Energy Sources

_________ energy source that can be used to generate energy, produce electricity, or control large machinery, but is harmful to the environment.

• Solar energy

• Non-renewable

• Wind

• Renewable

_________ is produced by collecting sunlight and converting it into electricity.

• Solar energy

• Wind

• Hydropower

• Nuclear

When the energy comes from_________, we call it hydroelectric energy.

• nuclear

• wind

• solar

• water

Energy from _________ is renewable because we cannot use it all.

• Sun

• Gas

• Oil

• Coal

The sun and the wind are _________ of energy.

• alternative sources

• limited

• harmful

• polluting

Fossil fuels are _________ energy sources.

• solar energy

• renewable

• non-renewable

• wind

A non-renewable energy source can be used to power machinery, but it also _________ the environment.

• cleans

• pollutes

• helps

• protects

We will use _________ energy sources such as wind and solar energy to solve the pollution problem.

• non-renewable

• renewable

• limited

• expensive

Hydropower is_________ because dams cannot be built in some areas.

• limited

• unlimited

• abundant

• dangerous

Natural gas and oil are called _________.

• solar energy

• fossil fuels

• biogas

• nuclear energy