Science Homework

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Across
  1. 2. Distance between waves
  2. 3. To go faster
  3. 4. This force runs electric motors
  4. 7. The effect of hearing a higher frequency of sound as the source approaches
  5. 9. A course in which something moves
  6. 10. laws of physics
  7. 11. km/h is used to measure....
  8. 12. Strength of energy in a movement
  9. 13. Property of manner
  10. 15. Movement or tendency to move towards the centre of gravity
  11. 18. The maximum extent of vibration
  12. 19. Kilograms is a unit used to measure this
Down
  1. 1. of compression
  2. 5. A type of wave where the particles move up and down
  3. 6. To compress
  4. 7. To slow down
  5. 8. The rate in which something happens in a given time
  6. 14. Space is a....
  7. 16. The speed of something in a given direction
  8. 17. Running lengthways rather then across