Energy

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Across
  1. 3. place where sound can't travel
  2. 5. a wave that has peaks and dips
  3. 6. energy that can travel in space
  4. 10. devices that use light from the sun to produce electricity
  5. 11. the substance through which wave travels
  6. 12. a wave that transfers energy through materials
Down
  1. 1. substance where sound travels the slowest
  2. 2. energy found on the sun
  3. 4. energy found in fireworks while at rest
  4. 7. internal energy caused by the motion of the particles
  5. 8. sound travels through tiny_____
  6. 9. substance where sound travels the fastest
  7. 10. energy that is produced by the vibration of particles