5. Waves

speed

The distance traveled per unit of time, often measured in meters per second (m/s).

frequency

The number of occurrences of a repeating event per unit time, typically measured in hertz (Hz), where 1 Hz equals one cycle per second.

wavelength

The distance between successive peaks (or troughs) of a wave, typically measured in meters.

amplitude

The maximum extent of a wave's oscillation, indicating the energy of the wave and measured from the equilibrium position.

reflection

The bouncing back of a wave when it hits a surface, allowing it to change direction.