Waves

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Across
  1. 3. sound waves with frequencies higher than the upper audible of human hearing
  2. 4. what happens to object the exact same thing will happen to the other
  3. 6. when the waves bend around small obstacles or spread out after they pass through small openings
  4. 7. a distrubance that transfers energy from on place to another
  5. 9. what happens to one object the exact opposite will happen to the other
  6. 11. sound energy per unit volume
Down
  1. 1. the distance between two peaks of wave
  2. 2. a wave that travels through a material of fluid or on its surface without causing a permanent structural physical change
  3. 5. a wave that has changed direction by moving from one material to another material of another density
  4. 8. the changes in the frequency of any kind of sound or light wave produced by a moving source with respect to an observer
  5. 10. vibrating forms of energy that are made of molecules and look alike waves