Refraction

What is the name of the dashed line in the diagram?

When a light ray enters a more dense medium it will...

• speed up

• slow down

• not change speed

When a sound wave enters a less dense medium it will...

• speed up

• slow down

• not change speed

A light ray enters a glass block as shown in the diagram. The light ray will...

• speed up

• slow down

• not change speed

• bend towards the normal

• bend away from the normal

A sound wave enters a glass block as shown in the diagram. The sound wave will...

• speed up

• slow down

• not change speed

• bend towards the normal

• bend away from the normal

A light ray enters a glass block along the normal as shown in the diagram. The light ray will...

• speed up

• slow down

• not change speed

• bend towards the normal

• bend away from the normal

Angle 1 is called the angle of _________.

Angle 2 is called the angle of __________.

When a wave enters a denser material, its speed decreases and its frequency...

• increases

• decreases

• does not change

When a wave enters a denser material, its speed decreases and its wavelength

• increases

• decreases

• does not change