Grade 4 · Science · Lesson 23

Renewable energy sources

Energy sources are materials or natural forces used to produce power. They are grouped into two main types: renewable and nonrenewable. Renewable energy sources are naturally replenished and will not run out. Nonrenewable energy sources are finite — once used, they cannot be replaced quickly.

What this lesson teaches

1Define renewable and nonrenewable energy sources
2Classify energy sources as renewable or nonrenewable
3Explain how different energy sources generate electricity
4Describe the advantages of using renewable energy

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