a disturbance in matter that transfers energy through the matter.

is a region in a longitudinal wave where the particles are closest together

is a region in a longitudinal wave where the particles are furthest apart.

waves that travel through or over Earth. They are usually generated by movements of the Earth's tectonic plates (earthquakes).

a process by which a wave hits an object and bounces off it

the lowest point of a wave.

the highest point of a wave.

a type of mechanical wave in which the particles of the medium vibrate in a direction that is parallel to the direction that the wave travels.

The matter through which the wave travels.

Distance between two corresponding points of adjacent waves, such as the distance between two adjacent crests of a transverse wave.

is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels.

is the maximum distance the particles of the medium move from their resting positions when a wave passes through.

The number of waves that pass a fixed point in a given amount of time.