Light & waves

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Across
  1. 1. measuring things outside our galaxy and in other universes
  2. 4. goes fastest in solids and slowest in air
  3. 6. light bouncing off of a medium
  4. 9. the bottom part of a wave
  5. 11. the top part of a wave
  6. 12. the number of crest produced in an amount of time
Down
  1. 1. light being absorbed by colors, black absorbs all colors
  2. 2. the distance from one crest to the next
  3. 3. a spectrum of waves that radiates from the sun
  4. 5. air,liquid,solids
  5. 7. goes fastest in gases and slowest in solids
  6. 8. distance of planets from the sun within our galaxy
  7. 10. light bending in a denser or lighter medium