Waves

1. Any material substance which can propagate waves or energy
3. The distance a wave travels in a given amount of time
8. abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums
10. Waves where the particle motion is in the same direction in which the wave is propagating
11. When the maxima of two waves are 180 degrees out of phase
12. The change in direction of a wave passing from one medium to another caused by its change in speed
13. A wave vibrating at right angles to the direction of its propagation
14. The spreading of waves around obstacles
15. The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position

2. The entire distribution of electromagnetic radiation
4. The number of waves that pass a fixed point in a given amount of time
5. When the maxima of two waves add together so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes
6. The distance between identical points in the adjacent cycles of a waveform signal propagated in space or along a wire
7. the flow of energy in the form of the electric and magnetic fields that make up electromagnetic waves
9. The apparent difference between the frequency at which sound or light waves leave a source