A ripple tank: used to generate water waves in a sciencelaboratory

Wavelength λ

Period(t) unit: second

Amplitude a

Frequency(f) unit: hertz(Hz)

Velocity(v) formula: velocity= frequency x wavelength

A wave can be defined as the propagation ofperiodic disturbances without the transfer of anymaterial medium.

There are transverse and longitudinal waves

T=1/f

f=1/T

v(velocity)= fλ

used to power hydroelectric dams to bring power to many places in the world

There are two types of graphs to describe wave motion:

Displacementtime graph

Displacementposition graph

surface that joins all adjacent points which have the samephase of vibration on the wave

such as ultraviolet waveswhich can cause skin cancer