PHYSICS

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Across
  1. 3. vibrating objects that are shorter make ... pitched sounds than those that are longer.
  2. 4. The amplitude is the distance from zero to the ..., or....,of the graph.
  3. 7. measure the amplitude in...
  4. 8. A frequency of 500 Hz means that 500 vibrations happen every...
  5. 9. distance that particles in air will be ... and ...
  6. 10. way to describe how quiet or loud a sound appears is called...
  7. 11. how high or low a sound appears on a musical scale is called .....
  8. 12. The reason that the pitch of the sound from the vibrating ruler changes is because the speed of the....
  9. 13. musical instrument called a ....
Down
  1. 1. measured in a unit called hertz or Hz is called....
  2. 2. compare the frequencies of sound waves of different pitches is called....
  3. 5. The maximum distance that particles move, either forward or backward....
  4. 6. he graph shows the distance that the particles move .... and backward with time.
  5. 7. The horizontal axis of this graph is...
  6. 8. when the vibrating ruler is moved, the length of the vibrating part is shorter,then what happens is