Across
- 2. energy which causes vibrations in the air
- 6. essential energy from plants
- 8. type of energy stored in batteries and bananas
- 10. high energy electromagnetic radiation
- 12. energy alternative from the sea
- 14. unit of measuring energy
- 15. het energy from the sun
- 17. process by which living things get energy from food
- 19. one of man's oldest energy sources-used for sailing ships and grinding grain
- 20. needed to do work
Down
- 1. energy used for lifting in scrap metal yards
- 3. fossil fuel which is one of our non-renewable resources
- 4. produced in every energy conversation
- 5. most commonly used energy in home and industry
- 7. gas which is a good energy source but is dangerously explosive
- 9. solid fossil fuel which causes pollution problems
- 11. 'alternative energy' source which can be expensive to harness
- 13. converts kinetic energy to electrical energy
- 16. energy of movement
- 18. important type of energy but with great potential dangers