Unit 1 Lesson 2 Vocabulary

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Across
  1. 1. combination of transverse and longitudinal waves
  2. 5. the process of a wave reversing direction and traveling back to the original medium
  3. 10. energy is parallel to wave direction
  4. 12. repeated disturbance that moves energy
  5. 14. to bounce back
  6. 16. force that resists movement of two surfaces against each other and creates thermal energy
  7. 17. heat
  8. 18. how loud or soft something sounds
  9. 19. anything that has mass and takes up space (volume); solid, liquid, or gas
  10. 21. when a sound is reflected
  11. 23. where two media meet
Down
  1. 1. vibrations through a medium that carry sound energy
  2. 2. rest position to crest or rest position to trough; gives the sound volume
  3. 3. when an object takes in the energy of a wave
  4. 4. plural of medium or more than one medium
  5. 6. energy is perpendicular to wave direction
  6. 7. a substance that the wave travels through
  7. 8. to move back and forth quickly
  8. 9. how high or low a sound is
  9. 11. a wave that has changed direction after it has reached a boundary
  10. 13. number of waves per second; determines the pitch
  11. 15. small pieces of matter that are too small to see (microscopic)
  12. 19. a wave that requires a medium to travel through
  13. 20. when a wave goes from one medium to another
  14. 22. used to move things or do work