Across
- 5. store electrical energy produced by solar cells
- 7. energy that travels as waves through matter or through empty space
- 8. careful use and management of resources
- 10. energy of moving air
- 11. energy from the sun
- 12. energy of moving water
Down
- 1. energy of moving object
- 2. energy of moving particles
- 3. any material from living things that can be used as an energy source
- 4. solar cell can change light energy into electricity
- 6. the energy of moving particles
- 7. the ability to make things move and change
- 9. a change from one form to another