Energy

3. The maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position
6. waves where the particle motion is in the same direction in which the wave is propagating
7. the flow of energy in the form of the electric and magnetic fields that make up electromagnetic waves
9. the distance a wave travels in a given amount of time
10. the distance between identical points in the adjacent cycles of a waveform signal propagated in space or along a wire
11. the change in direction of a wave passing from one medium to another caused by its change in speed
12. 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
13. When the maxima of two waves are 180 degrees out of phase
14. The apparent difference between the frequency at which sound or light waves leave a source
15. the number of waves that pass a fixed point in a given amount of time

1. the spreading of waves around obstacles
2. Any material substance which can propagate waves or energy
4. The entire distribution of electromagnetic radiation
5. a wave vibrating at right angles to the direction of its propagation
8. abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums