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1. | Rule for determining how a wave will reflect. It states that that the reflected angle of wave motion should equal the incident angle of wave motion. These angles are mesured by comparing the direction of wave motion to an imaginary line drwan perpendiclarly (normal) to the reflecting suface. |
3. | The angle between a wave striking a barrier and the line perpendicular to the surface |
4. | A situation where waves curve or spread-out as they pass through an opening or move around a barrier |
7. | The material through which a physical or mechanical wave travels. The medium is the sole factor that determines the velocity that a wave has while in that medium. Light waves do not require a medium. |
8. | High-energy wave of high frequency and with a wavelength shorter than an x ray; released |
9. | The overlapping or collision of two or more waves. Waves move through each other, but while they overlap they can make a larger disturbance if their amplitudes are the same (constructive interference) or will make a smaller disturbance if their amplitudes (destructive interference). |
10. | The rate at which an object moves. In other words, how far an object moves in a given amount of time (usually meters/sec in physics). Wave velocity is the rate that waves propagate through a medium and is affected by the medium. You can measure the velocity of waves by measuring how far a waves moves and dividing this by the time the wave takes to move that distance |
12. | Transverse radiant energy waves, ranging from low frequency to very high frequency, |
13. | A piece of transparent or reflecting material, which contains many thousands of parallel |
14. | The amount that a wave disturbs the medium from it's normal state. The greater the disturbance, the greater the corresponding amount of energy |
16. | A lens that is thicker in the middle than at the edges; used to correct farsightedness |
19. | The distance between waves. This is usually measured by determining the distance between two identical regions ( crest to crest or trough to trough). Wavelength is affected by the velocity of waves and the frequency of the source producing waves. If velocity and frequency are known, wavelength can be found by dividing Velocity by Frequency |
20. | A wave that does not have to travel through matter in order to transfer energy |
21. | The distance between the principal focus of a lens or mirror and its optical center |
23. | The part of a transverse wave that extends below (negative) the rest state of the medium. |
24. | A primary light color—red, blue, or green; these three colors produce white light when |
25. | A kind of wave where the medium is disturbed in a direction that is perpendicular to the direction the wave is moving (propagating). |
26. | A phenomenon that occurs when waves strike barriers or other media. In the case of barriers, waves will "bounce" off of the barrier in a direction that is constent with the Law of Reflection. In the case of a change in medium, some of the wave reflects while the rest moves into the new medium (see refraction). |
27. | A type of wave where the disturbance is created in the same plane as the direction of wave motion (propagation). |
29. | The direction of motion of a wave though a medium. One dimensional (for example a slinky) waves propagate in a straight line. Two dimensional waves may propagate in a straight line (plane waves) or in all directions on a surface (circular waves on a pond/ ripple/tank). Three dimensional waves can propagate in all directions (like a light bulb illuminating a room). |
30. | Anything that vibrates to create waves |
34. | In a transverse wave, this is the part of the wave that rises "above" (positive) the rest state of the medium. |