Science

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Across
  1. 2. fifth planet from sun
  2. 4. one called animal
  3. 9. charged atom
  4. 10. person study weather
  5. 12. second layer of skin
  6. 15. energy in motion
Down
  1. 1. O most common blood type
  2. 3. lowest part of wave
  3. 5. measures air pressure
  4. 6. earth's pull on object
  5. 7. bouncing sound waves
  6. 8. measure of sound
  7. 11. glands produce tears
  8. 13. top layer of skin
  9. 14. largest body organ