Energy & Light

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Across
  1. 4. energy sources that can be used over and over again
  2. 7. the earths greatest energy source
  3. 8. what light does when it shines on black
  4. 10. what is put into the air when we burn nonrenewable energy sources
  5. 12. something solid that light cannot pass through
  6. 14. we use it everyday to power our electronics
  7. 15. light bounces off something shiny
Down
  1. 1. something clear that light can pass through
  2. 2. something foggy that light light has a difficult time passing through
  3. 3. the number of colours in light
  4. 5. types of lightbulbs that use less energy
  5. 6. tiny massless atoms that make up light
  6. 8. what is thunder
  7. 9. light bending as it travels through something
  8. 11. the fastest thing known in the universe
  9. 13. the colour that is made when all 7 colours of light are mixed together