Waves

2. change in direction of a wave as it moves from one medium to another
5. distance from the equilibrium line of a wave to the point of maximum vertical displacement (crest or trough)
7. the interference of two waves of equal frequency and opposite phase, resulting in their cancellation where the negative displacement of one always coincides with the positive displacement of the other
10. the state of a system in which an abnormally large vibration is produced in response to an external stimulus, occurring when the frequency of the stimulus is the same, or nearly the same, as the natural vibration frequency of the system
12. oscillations are parallel to the direction of the wave (slinky, sound waves)
15. the maximum value of upward displacement within a cycle
16. movement that occurs in a repeating and predictable pattern (e.g., up and down, back and forth, round and round)
18. the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves

1. number of complete cycles or oscillations per second
3. change in direction of a wave resulting from interaction with a boundary
4. a disturbance or variation which travels through a medium
6. wave propagated at the speed of light resulting from oscillations in electrical charge and current; electromagnetic waves include light as well as other types of radiation
8. linear distance between identical points on successive waves
9. time required to complete a cycle of motion
11. matter with consistent composition that can propagate a wave
13. the minimum or lowest point in a cycle
14. the bending of a wave around a small obstacle and formation of new wave fronts as it expands outward from a small opening
17. oscillations are perpendicular to direction of the waves (string, water)