sound waves

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Across
  1. 3. When the sound wave is the most packed together
  2. 5. Sound waves can't travel in space because their is no________
  3. 6. When a human is exposed to 150+ ________ their ear drums burst
  4. 7. This is what Sheldon dress up as for Halloween in season 1 episode 6 of the big bang theory and the change in frequency of a wave (sound or light) produced by a moving source relative to an observer
  5. 9. This is when the wave has the most energy and this is what loudness represents
  6. 10. When the sound wave is most spread apart
  7. 11. A concert goer want to find out what the ________ of the music was so they measured it in decibels
  8. 12. When you yell in a cave it ________ and this is is because the sound wave reflected of the walls
Down
  1. 1. The type of wave that a sound wave is and is also called a compression wave
  2. 2. This is how fast a wave completes one wave length and is measured in hertz
  3. 4. The type of wave that you hear and is made of compressions and rarefactions
  4. 8. The singers instructor told them that they where too high______