Across
- 4. renewable energy from running water in dams
- 6. used to raise a object
- 7. unlimited made more quickly than used
- 9. a simple Machine using a rope and a wheel
- 10. movement of energy in waves
- 13. sloping surface to move objects
- 16. bonds of atoms and molecules
- 17. blowing air
- 18. a simple machine used to apply force
- 19. nucleus of an atom
- 20. used to break matter bonds
Down
- 1. a wheel with a rope around the wheel
- 2. energy from the sun
- 3. renewable heat from the inner parts of the earth
- 5. energy waiting to be used
- 8. refers to living or recently living organisms
- 9. is done when force moves an object
- 11. energy that is being used
- 12. movement of one place to anther
- 14. limited can't make as fast as we use
- 15. dead animals and plants burned for energy
- 21. used to help move a heavy load