Waves

4. / the vibration of an object caused by a another vibration at the objects natural frequency.
5. / the spreading of a wave around a barrier or through an opening.
6. Point / the midpoint of the wave halfway between a crest and trough on a symmetrical wave.
7. of Reflection / the angle of incidence is equal to the angle of reflection.
9. / the lowest point on any wave.
10. / displacement of the particles of the medium is parallel to the direction of wave propagation.
12. / results in a smaller amplitude.
13. / the time interval for one complete motion of the wave.
14. / the speed of the wave.
15. / the distance from a point on one wave to the same point on the next wave.
17. / the number of complete vibrations per unit time.
18. effect / the change in frequency due to the relative motion of the wave source and the observer.

1. / the maximum displacement of a particle of the medium from the rest or equilibrium position.
2. / the action of restricting the vibrations of a transverse wave to one single direction.
3. / the material the wave is traveling through.
4. / the turning back of a wave when it reaches the boundary of the medium through which it is traveling.
8. / results in a larger amplitude.
9. / displacement of the particles of the medium is perpendicular to the direction of wave propagation.
11. / the bending of a wave as it passes obliquely from one medium into another of different propagation speed.
16. / the highest point on any wave.