Light (STAAR released questions)

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, such as from air to water.

Front

Why does a straw look bent in a glass of water?

Back

The straw looks bent due to the refraction of light as it moves from water to air.

Front

What happens to light when it hits a mirror?

Back

Light reflects off the surface of the mirror, changing direction.

Front

What is reflection?

Back

Reflection is the bouncing back of light when it hits a surface.

Front

How does light travel?

Back

Light travels in straight lines until it encounters a different medium or surface.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing of light off a surface, while refraction is the bending of light as it passes through different materials.

Front

What is a medium in terms of light?

Back

A medium is a substance through which light travels, such as air, water, or glass.

Front

What is the law of reflection?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection.

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits the boundary of a medium at a steep angle and is completely reflected back into the medium.

Front

What is a fiber optic?

Back

A fiber optic is a thin, flexible glass or plastic fiber that transmits light signals over long distances.