VA SOL 5.6 Light

Front

What is light?

Back

Light is a form of energy that travels in waves and can be seen by the human eye.

Front

Does light need a medium to travel?

Back

No, light does not need a medium (solid, liquid, or gas) to move.

Front

What is the term for the highest point on a light wave?

Back

Crest.

Front

What is the term for the lowest point on a light wave?

Back

Trough.

Front

What happens when light refracts?

Back

Light bends as it passes from one medium to another, changing its speed.

Front

What is an example of light refraction?

Back

A spoon appearing to bend when immersed in a cup of water.

Front

What is NOT an example of light refracting?

Back

A brick wall looking lighter in the sunlight.

Front

What is the term for the distance between two consecutive crests or troughs in a wave?

Back

Wavelength.

Front

What is frequency in terms of light waves?

Back

Frequency is the number of waves that pass a point in one second.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (or about 186,282 miles per second).