waves BES (WAVE, MEDIUM, AMPLITUDE, CREST, WAVELENGTH, FREQUENCY, HERTZ, DIFFRACTION, ECHO, ABSORPTION, RADIATION, MICROWAVES, LONGITUDINAL, TRANSVERSE, TROUGH, COMPRESSION, RAREFACTION, REFLECTION, REFRACTION, MECHANICAL, ELECTROMAGNETIC, SOUND, VISIBLEL

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Across
  1. 2. A disturbance that transfers energy through matter or empty space, but does not carry matter.
  2. 3. The change in sound as the source gets closer (higher pitch) or farther away (lower pitch).
  3. 5. A wave that moves parallel (in the same direction) to the disturbance.
  4. 7. A wave that moves perpendicular (at right angles) to the disturbance.
  5. 10. A sound wave that reflects off a surface and can be heard again.
  6. 15. A type of mechanical, longitudinal wave that travels through air, water, or solids.
  7. 16. A region in a longitudinal wave where the particles are farthest apart.
  8. 18. A vibration that moves through the Earth, usually caused by earthquakes.
  9. 23. The highest point of a transverse wave.
  10. 24. The lowest point of a transverse wave.
  11. 25. A type of energy transfer that does not require a medium to travel.
Down
  1. 1. The bending of a wave when it passes through a new substance and its speed changes.
  2. 4. A wave, like light or radio, that does not require a medium to travel.
  3. 6. The maximum distance a wave moves from its resting position; how far a wave rises or dips.
  4. 8. The distance between two successive corresponding parts of a wave, like from crest to crest.
  5. 9. The change in direction of a wave when it hits a surface and bounces back.
  6. 11. The portion of the electromagnetic spectrum that can be seen by the human eye.
  7. 12. Electromagnetic waves with shorter wavelengths than radio waves, used in ovens and cell phones.
  8. 13. The number of waves that pass a point in a specific amount of time.
  9. 14. The bending of a wave when it finds a barrier or an edge, such as a gap between objects.
  10. 17. When a material soaks up light waves, preventing them from passing through or bouncing off.
  11. 19. A type of wave that requires a physical medium to travel.
  12. 20. A region in a longitudinal wave where the particles are closest together.
  13. 21. The unit of measurement for frequency, indicating how many waves pass a point per second.
  14. 22. The substance (solid, liquid, or gas) through which a wave can travel.