Across
- 2. When heat is transferred when two things touch
- 3. energy resource that uses light
- 4. A good insulator
- 7. energy resource built on rivers
- 8. the rate of transfer of energy
- 9. Input energy of a light bulb
Down
- 1. Unit of energy
- 2. Heat transfer when heat rises
- 5. Fossil fuel
- 6. Moving energy