Across
- 3. Particles that help scatter solar radiation.
- 5. Gas that absorbs UV radiation in the atmosphere.
- 6. Gas that absorbs infrared energy along with water vapor.
- 9. Electromagnetic energy from the sun reaching Earth.
- 11. Most common semiconductor material for solar cells.
- 12. Another word for irradiance.
- 13. Produced by direct radiation reaching the ground.
- 15. Minutes it takes for sun energy to reach earth.
Down
- 1. The sun consists of 80% of this gas.
- 2. Energy source of the sun is thermonuclear ______.
- 4. Light particle that strikes a PV cell.
- 7. These reflect part of the radiation back into space.
- 8. The sun contains 19% of this element.
- 10. The ultimate source of energy for the earth.
- 14. Radiation direction changed by scattering.