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A transverse wave is if a waves oscillations are not in the direction it moves. A longitudinal wave is if a wave's oscillations are in the direction it moves.

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There are four types of wave interactions they are reflection, diffraction, refraction, and absorption. Reflection is when the wave bounces and goes in a new direction. Diffraction is when the wave bends around an object or through holes in the object. Refraction is when the wave bends as it passes into and through an object. Absorption is when the wave is absorbed and disappears.

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A plane wave is the moving waves that have crests in parallel straight lines. Circular waves are moving waves that have crests that form circles around a single point where the wave began

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The formula for wave speed is frequency times wavelength

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A resonance happens when a periodic force has the same frequency as the natural frequency

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Periodic force is the force that is repeated over and over

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A period is the time it takes for a wave to complete a cycle. Amplitude is the maximum absolute variation for a wave.

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Frequency is the number of crests of a wave that move past a given point in a given unit of time. The frequency is usually repetitive and the same throughout. Hertz is the unit of measurement used for frequency.

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Harmonic motion is the motion that repeats over and over. An example is a pendulum.

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Linear motion is motion that goes from one place to another without repeating. An example is a arrow heading one way.

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Waves are a traveling oscillation that has properties of frequency, wavelength, and amplitude. There are different waves, like electromagnetic waves or sound waves. In the wave there is the crest, trough, and amplitude. The crest is the high point of the wave. The trough is the low point of the wave. The wavelength is the distance from any point on a wave to the same point in the next cycle of the wave.