Across
- 5. A black liquid formed underground that is a fossil fuel.
- 8. a resource that cannot be replaced at the same rate it is being used.
- 10. Something that formed in NATURALLY and exists in nature.
- 11. A fossil fuel that is burned. It is a black or brown rock.
- 12. Any material made by plants or animals that can be converted into energy.
- 13. Nonrenewable resources that formed millions of years ago and are remains of living things.
- 15. Natural resources can be ______ or nonliving.
Down
- 1. Heat from the Earth's core that is turned into energy.
- 2. flowing water captured and then turned into electricity.
- 3. Energy in the form of heat and light.
- 4. Moving air created as the heats Earth's surface.
- 6. Cars, houses, electronics and some medicines are all _______.
- 7. a resource that can be replaced quickly or never run out.
- 9. a tool that humans use to do things.
- 14. something that is man made.