Waves

2. The bending of light as it passes through different mediums.
5. Sound waves with frequencies above the normal human hearing range.
9. A system that uses sound waves to detect and locate objects underwater.
10. Rapid back-and-forth motion that produces sound.
11. The substance through which a wave travels.
12. The number of waves that pass a point in one second.
14. The height of a wave, indicating the strength of the wave.
15. The perceived frequency of a sound.
18. The bouncing back of light or sound waves from a surface.
21. The highest point of a wave.
23. The increase in amplitude when an object vibrates at its natural frequency.
24. The range of different colors with different wavelengths.
25. Type of wave where the particle displacement is perpendicular to the wave direction.
26. The unit for measuring the intensity of sound.

1. Type of wave where the particle displacement is parallel to the wave direction.
3. A particle representing a quantum of light.
4. Sound waves with frequencies below the normal human hearing range.
6. The distance between two consecutive peaks of a wave.
7. The perceived loudness of a sound.
8. The bending of waves around obstacles.
13. The study of light and its interaction with matter.
16. The unit of frequency, one cycle per second.
17. A unit used to measure the intensity of sound.
19. A reflected sound wave.
20. The lowest point of a wave.
22. The interaction between waves that meet.