4.10 waves are refracted

Why do waves change direction when they are refracted?

The wave changes speed when it enters a material of a different density so bends towards or away from the normal and therefore changes direction

When a light wave is passing through a more dense material from a less dense material, how is it refracted?

The light wave will slow down and bend towards the normal - the wavelength decreases

When a light wave is passing through a less dense material from a more dense material, how is it refracted?

The light wave speeds up and bends away from the normal

When a sound wave is passing through a more dense material from a less dense material, how is it refracted?

The sound wave will speed up and bend away from the normal

It is the opposite to light waves

When a sound wave is passing through a less dense material more a less dense material, how is it refracted?

The sound wave will slow down and bend towards the normal

When a water wave goes from shallower to deeper water, how is it refracted?

The water wave travels faster/speeds up and refracts away from the normal

When a water wave goes from deeper to shallower water, how is it refracted?

The wave will slow down and bend towards the normal

How does the speed of sound waves change in more dense materials?

Sound travels faster in denser materials

How does the speed of light waves change in more dense materials?

Light travels slower in denser materials

How does the speed of water waves change in deeper water?

Water waves travel faster in deeper water