Sound and Light Energy

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Across
  1. 5. The substance through which waves travel
  2. 6. Another name for solar cells is _____ cells
  3. 9. What is the spectrum on which light waves are measured
  4. 10. What energy cannot travel through space
  5. 11. Can energy be transferred through light
  6. 12. What do all sounds have to start with
Down
  1. 1. The air is made up of ____ that help sound travel
  2. 2. If sounds are very loud, we can ____ the vibrations
  3. 3. The Sun's rays referred to as?
  4. 4. Sound and light energy are both what kind of energy
  5. 7. Much like sound, light also travels in ______
  6. 8. The devices that collect sunlight and transform that energy into electricity are called solar