L1: Wave and Light Test

Front

What is the material through which a wave travels called?

Back

Medium

Front

How does sunscreen protect your skin?

Back

By absorbing ultraviolet waves.

Front

What is the term for the bending of light as it moves from air into water?

Back

Refraction

Front

Why can't Hamza see the waves causing warmth near a toaster?

Back

They have wavelengths different from visible light.

Front

What unit is used to measure frequency?

Back

Hertz.

Front

What is a wave?

Back

A disturbance that transfers energy through space or matter.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second.

Front

What is reflection in terms of light?

Back

The bouncing back of light waves when they hit a surface.

Front

What is absorption in the context of waves?

Back

The process by which a wave's energy is taken in by a material.

Front

What is the difference between ultraviolet light and visible light?

Back

Ultraviolet light has shorter wavelengths than visible light.