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| The distance from two repeating parts of a wave such as crest to crest or trough to trough. |
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| The height of the wave from the equilibrium to crest or to the trough. |
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| The center spot in the medium where the wave is not moving. |
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| The material a wave transfers through. |
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| A wave in which the particle (moving medium) and energy travel parallel, same direction. |
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| A wave in which the particle (moving medium) and energy travel perpendicular, cross ways. |
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| Constructive Interference |
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Definition
| When two waves collide on the same side adding up to make a bigger wave, and the waves still pass through each other. |
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| When two waves collide on the opposite side subtracting from each other to make a smaller wave, and the waves still pass through each other. |
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| The measurement of how many times the wave repeats in a second, cycles per second. Measured in Hertz. |
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| How long it takes for a wave to repeat, seconds per cycle. Measured in seconds. |
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| The unit of frequency measured in cycles per second. |
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| When the wave hits a boundary (medium change) and flips to the other side coming back. |
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Definition
| When the wave hits a boundary (medium change) and stays on the same side coming back. |
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| Less Dense to More Dense Material (Refraction) |
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Definition
| The wave speeds up, causing the transmitted part (passes through) to become shorter in wavelength. Some of the energy is reflected back as a fixed end, flipping to the opposite side. |
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| More Dense to Less Dense Material (Refraction) |
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Definition
| The wave slows down, causing the transmitted part (passes through) to become longer in wavelength. Some of the energy is reflected back as a free end, returning on the same side. |
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Definition
| an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other. The effect causes the sudden change in pitch noticeable in a passing siren, as well as the redshift seen by astronomers. |
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| The only two things that change the speed of a wave. |
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| When a wave spreads out from across an edge, around a corner, or from passing through a small hole. Usually interference happens afterwards. |
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| The relationship between period and frequency. |
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| The symbol for wavelength. |
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Definition
| A wave that remains at a constant position. The wave reflects back off of a boundary back onto its self creating constructive and destructive interference. |
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Definition
| The place on a standing wave where destructive interference creates a point of no movement in the medium. |
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Definition
| The place on a standing wave where constructive interference creates a point with the most movement. |
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