sound waves

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Across
  1. 5. a space entirely devoid of matter.
  2. 7. anything that takes up space
  3. 10. the compressed space in a medium as a sound travels though it
  4. 12. the top of a wave above starting point
  5. 13. something that receives sound
  6. 16. a push or a pull
  7. 17. the fundamental ability to do work, cause change, or produce heat, light, and motion
Down
  1. 1. a compression wave traveling trough the air making sound
  2. 2. the part of your ear that sends a signal to your brain
  3. 3. the loudness of sound
  4. 4. the thing that sound comes from
  5. 5. the fast back and forth motion of an object
  6. 6. the top of a wave above starting point
  7. 8. the length of a wave
  8. 9. the pitch of a sound
  9. 11. how high or low the sound is
  10. 14. the bottom of a wave below starting point
  11. 15. vibrations that travel through the air that can be heard when they reach a person's ear
  12. 17. a series of sounds caused by the reflection of sound waves from a surface back to the listener