Waves

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Across
  1. 1. A frequency just below a visible wavelength, used to cook food
  2. 3. Lowest frequency wave
  3. 6. Waves that come from the sun and can give you sunburn
  4. 8. The highest frequency waves
Down
  1. 2. The range of types and frequencies that a wave can be
  2. 4. Waves visible to the human eye
  3. 5. Used to look at the skeletal system
  4. 7. A lower frequency wave, used to see things based on heat