Refraction of light

Front

What is refraction of light?

Back

Refraction of light is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is a glass prism used for?

Back

A glass prism is used to separate white light into its component colors, creating a rainbow effect.

Front

How many colors are in a rainbow?

Back

There are 7 colors in a rainbow.

Front

What happens to light when it enters a denser medium?

Back

Light bends toward the normal line when it enters a denser medium.

Front

What is the normal line in refraction?

Back

The normal line is an imaginary line that is perpendicular to the surface at the point of incidence where light enters a new medium.

Front

What are some examples of mediums that light can pass through?

Back

Examples of mediums include air, water, glass, and plastic.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Front

What is the effect of light passing from air to water?

Back

When light passes from air to water, it slows down and bends toward the normal.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits the boundary of a denser medium at an angle greater than the critical angle, causing it to reflect back into the denser medium.

Front

What is the critical angle?

Back

The critical angle is the angle of incidence above which total internal reflection occurs.