7th Grade Behavior of Light and interaction with matter pre test

Front

What is reflection in terms of light behavior?

Back

Reflection is the bouncing back of light when it hits a surface. For example, when light hits a mirror, it reflects back.

Front

What is refraction?

Back

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

Front

What is diffraction?

Back

Diffraction is the spreading out of light waves when they pass through a narrow opening or around obstacles.

Front

What is the speed of light in a vacuum?

Back

Light travels fastest in a vacuum, at approximately 299,792 kilometers per second.

Front

What happens to light as it travels through air?

Back

As light travels through air, some energy can be absorbed by air particles, causing the light to become dimmer.

Front

What is the difference between reflection and refraction?

Back

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

Front

What is the principle of light absorption?

Back

Light absorption occurs when light energy is taken in by a material, which can cause the material to heat up.

Front

What is the role of a prism in light behavior?

Back

A prism can refract light, separating it into its component colors, creating a spectrum.

Front

What is interference in light waves?

Back

Interference is the phenomenon that occurs when two or more light waves overlap, resulting in a new wave pattern.

Front

What is the term for the angle at which light hits a surface?

Back

The angle of incidence is the angle between the incoming light ray and the normal (perpendicular) to the surface.