The waves transmit energy, they do not transmit matter​

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A lot of waves need a medium such as water or air to exist​

A wave is a periodic back and forth

In transverse waves, the particles are transmitted at right angles to the direction of the wave.

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In longitudinal waves, particles of the medium move in the same direction as the ​wave.

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Types of waves​

Wave attributes

When a wave strikes an obstacle or a boundary, the wave may bounce off the surface of the obstacle in another direction

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The waves that strike the obstacle are indicent waves, the waves that "bounce" off the object are called reflected waves.

Reflection of a wave

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The bending of the path of a wave as a result of wave speed is refraction

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​Refraction of a wave

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The diffraction causes the wave to spread out evenly when the opening is roughly equal to one wavelength

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Diffraction of a wave

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