Essential Facts 2.5

What is something found in nature and is valuable to humans?

• natural resource

• fossil fuels

• electricity

What can natural resources be?

• living and nonliving things

• natural gas

• oil

What is an example of a natural resource?

• air and sunlight

• plastic

• toys

What are natural materials or sources of energy that are useful to people and cannot be replaced easily?

• renewable resources

• nonrenewable resources

What is an example of a metal that is a nonrenewable resource?

• grass

• water

• copper

Where does some of the electricity we use come from?

• space

• nuclear energy

• running around

What resource are many of the fuels?

• renewable resources

• nonrenewable resources

What is not burned?

• uranium

• hydrogen

• coal

Where does a larger portion of the energy humans use come from?

• fossil fuels

• singing

• dancing

What is a source of energy made from the remains of ancient, once-living things?

• fossil fuel

• generate

• electricity