Across
- 4. the type of current in DC
- 5. particle of light
- 7. the type of current in AC, used by machines
- 9. A group of cells turns sunlight to electricity
- 11. the movement of electricity
- 12. used to make silicon
Down
- 1. these move to create electricity
- 2. the cells that convert light to energy
- 3. the material used to make solar cells
- 6. one material on top of another material
- 8. made by a photon hitting an electron
- 10. cnanges the DC current to AC