Across
- 2. Using resources in a way that protects the future
- 7. A form of energy that makes things warmer
- 8. A non-renewable fossil fuel found underground
- 9. A material that slows heat transfer
- 11. Materials or supplies that people use
- 12. Electricity created from moving water
- 17. Using energy in a way that reduces waste
- 18. Protecting and saving resources and energy
- 19. Something that gives power or makes things work
- 20. A measurement of how hot or cold something is
- 21. To use an item again instead of throwing it away
- 22. A black fossil fuel used for energy
Down
- 1. The usual weather conditions in an area over time
- 3. A machine that spins to create energy
- 4. A form of energy used to power devices
- 5. Energy that comes from the sun
- 6. Harmful waste released into the environment
- 10. To turn old materials into new products
- 13. A resource that can be replaced naturally
- 14. The natural world around us
- 15. To use less of something
- 16. Moving air that can be used to create energy