World and Waste

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. People who have severe hearing impairments (4)
  2. 3. The part of a gunlock that strikes the percussion cap when the trigger is pulled (6)
  3. 6. A logarithmic unit of sound intensity (7)
  4. 8. A heavy block of iron or steel on which hot metals are shaped by hammering (5)
  5. 10. The distance between two points in the same phase in consecutive cycles of a wave (10)
  6. 12. The number of occurrences within a given time period (9)
  7. 13. Division of a usually ___ divided leaf (5)

Down

  1. 2. A reply that repeats what has just been said (4)
  2. 4. The main cavity of the ___ (9)
  3. 5. Sound of any kind (5)
  4. 7. The property of sound that varies with variation in the frequency of vibration (5)
  5. 9. The phenomenon of a propagating wave being thrown back from a surface (10)
  6. 11. A state of mental or emotional strain or suspense (7)