8 Science Unit 3 Lesson 1

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Across
  1. 1. higher frequency EM waves carry _____ energy
  2. 3. electromagnetic waves do not need a ________ through which to travel
  3. 5. red, green and blue are called these types of colors
  4. 7. Earth's strong ______ fields near the poles helps to create auroras (lights) in the sky
  5. 9. IR
  6. 10. UV
  7. 11. different _______ of light are interpreted as different colors
  8. 14. Earth's ________ blocks most of the higher frequency radiation
  9. 15. number of times EM waves can circle the Earth in one second
Down
  1. 2. the transfer of energy as EM waves
  2. 4. use this to protect our bodies from UV radiation
  3. 6. ______ waves pass through humans safely
  4. 8. this valuable metal is a good reflector of EM radiation
  5. 11. the stream of electrically charged particles from the sun is called the solar ______
  6. 12. ______ light has the highest frequency
  7. 13. waves with the shortest wavelength