Across
- 3. stores energy for later use
- 4. our home planet
- 6. material on top of solar panels
- 8. another word for energy
- 9. type of energy that doesn't harm the planet
Down
- 1. solar panels don't work well here
- 2. energy the sun provides to the Earth
- 5. where solar panels are installed
- 6. color often associated with eco-friendly energy
- 7. the star at the center of the solar system