Across
- 4. Strength or energy used for physical action or movement
- 7. Energy from wind
- 8. Renewable energy source from plants and animal materials
- 11. Energy transfer that occurs when an object is being moved
- 12. Electricity that is produced by water.
- 13. The ratio of force produced by a machine to the force that was put into it.
Down
- 1. Energy that comes from the sun
- 2. A simple machine that uses a bar
- 3. The branch of physics that is concerned with the properties of gases
- 5. A form of hydro power
- 6. Energy that is stored in the Earth
- 9. A wheel with teeth that work together to make a machine work faster
- 10. Energy released from nuclear fusion