6th Science: Sound

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Across
  1. 3. The speed of sound waves through the air, around 340 m/s
  2. 5. The highness or lowness of a sound on a musical scale.
  3. 7. When heat, energy, or sound comes back from a surface
  4. 9. The movements that transfer sound through air or water.
  5. 10. a quality of a substance or material
  6. 12. Very small pieces of matter that make up everything.
  7. 13. The strength or weakness of a sound; shouting has more loudness than whispering.
Down
  1. 1. The reflection of a sound wave
  2. 2. what happens to a sound to make an echo
  3. 4. to move first in one direction and then in the opposite direction, again and again.
  4. 6. The changes that happen to sound
  5. 8. Something that is not intended, so is wasted.
  6. 11. The substances that waves move through.