KS3 WAVES

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Across
  1. 3. When a wave spreads out after passing through a gap.
  2. 5. Waves that we can see with our eyes.
  3. 6. How intense or strong a light appears.
  4. 9. The property of light that depends on wavelength.
  5. 11. The height of a wave from its rest position.
  6. 14. How fast a wave travels.
  7. 15. The material through which a wave travels.
  8. 16. When a wave changes direction as it passes into a new medium.
  9. 20. When two waves meet and combine.
  10. 21. The back-and-forth movement of particles that produces waves.
  11. 22. Waves that travel through air or other materials and can be heard.
Down
  1. 1. The distance between two consecutive crests or compressions.
  2. 2. How high or low a sound seems.
  3. 4. A wave where the vibrations are parallel to the direction of travel.
  4. 7. A material that lets light pass through easily.
  5. 8. How strong or intense a sound seems.
  6. 10. A material that does not let light pass through.
  7. 12. A wave where the vibrations are perpendicular to the direction of travel.
  8. 13. The time for one complete wave to pass a point.
  9. 17. When a wave bounces off a surface.
  10. 18. A disturbance that transfers energy from one place to another.
  11. 19. The number of waves passing a point each second.