KS3 Waves 05: Refraction and Lenses Quiz

What happens to light when it enters a material like water or glass?

• It speeds up and changes direction.

• It slows down and changes direction.

• It stops completely.

• It continues in a straight line.

Tags

NGSS.MS-PS4-2

What can ray diagrams be used to show?

• The temperature of light.

• The path light takes when it is refracted.

• The speed of light.

• The color of light.

Tags

NGSS.MS-PS4-2

What are lenses usually made from?

• Metal or wood.

• Rubber or cloth.

• Glass or plastic.

• Paper or cardboard.

What is the effect called when light waves change direction at the boundary between two substances?

• Refraction.

• Absorption.

• Diffraction.

• Reflection.

Tags

NGSS.MS-PS4-2

What happens to light when it slows down going into a denser substance?

• The ray bends away from the normal.

• The ray disappears.

• The ray speeds up.

• The ray bends towards the normal.

Tags

NGSS.MS-PS4-2

What is the angle called where the incident ray hits the block?

• Angle of dispersion.

• Angle of reflection.

• Angle of incidence.

• Angle of refraction.

Tags

NGSS.MS-PS4-2

At what speed does light travel in air or a vacuum?

• 300,000,000 m/s.

• 400,000,000 m/s.

• 500,000,000 m/s.

• 200,000,000 m/s.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What analogy is used to explain why light bends when it enters a different medium?

• A boat on water.

• A bird in the sky.

• A car moving from tarmac to mud.

• A plane in the air.

Tags

NGSS.MS-PS4-2

What is a convex lens made from?

• A transparent material that bulges outwards in the middle.

• A transparent material that is opaque.

• A transparent material that is concave.

• A transparent material that is flat.

What is the purpose of focusing light?

• To increase its speed.

• To get clear images.

• To make it disappear.

• To change its color.

Tags

NGSS.MS-PS4-2