waves

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Across
  1. 4. The maximum displacement shown by particles in the wave motion.
  2. 5. The characteristic of sound that changes according to the frequency.
  3. 7. Waves that need a material medium to propagate are known as _______ waves.
  4. 8. The point of maximum downward direction in waves.
  5. 9. The point of maximum upward direction in waves.
  6. 10. The unit of frequency
  7. 11. Sound wave is a _________ wave.
Down
  1. 1. An instrument used to demonstrate wave motion.
  2. 2. The number of oscillations produced at a unit time.
  3. 3. The distance between one particle and the closest next particle in a wave.
  4. 5. The time taken by a particle to complete an oscillation.
  5. 6. Waves are originated from these.