Light Energy Quiz

What is reflection of light?

• The process by which light is absorbed by a surface

• The process by which light changes color when it hits a surface

• The process by which light bounces off a surface

• The process by which light disappears into thin air

What are the laws of reflection?

• Angle of incidence is less than the angle of reflection

• Angle of incidence is greater than the angle of reflection

• Angle of incidence is equal to the angle of reflection

• There are no laws of reflection

Give an example of reflection of light in everyday life.

• Looking at yourself in the mirror

• Using a flashlight in a dark room

• Seeing a rainbow after a rainstorm

• Watching a movie in a theater

Explain the concept of refraction of light.

• When light passes through a medium, it remains at the same speed and direction, causing no change in its path.

• Refraction of light occurs only in a vacuum and not in any other medium.

• Light does not change speed or direction when passing from one medium to another, it remains constant.

• When light passes from one medium to another, it changes speed and direction, causing the light to bend. This phenomenon is known as refraction of light.

What causes refraction of light?

• Reflection of light off a surface

• Absorption of light by a material

• Change in speed of light when passing from one medium to another

• Scattering of light by particles in the atmosphere

How does light behave when it passes through a transparent material?

• It changes color

• It stops moving

• It continues to travel in a straight line

• It reflects back

Provide an example of a translucent material and explain why it is considered translucent.

• Glass

• Wood

• Metal

• Plastic

What is an opaque material? Provide an example.

• Plastic

• Air

• Wood

• Glass

Differentiate between transparent, translucent, and opaque materials.

• Opaque materials allow light to pass through completely

• Transparent materials allow light to pass through completely, translucent materials allow some light to pass through, and opaque materials do not allow light to pass through at all.

• Transparent materials allow sound to pass through completely

• Translucent materials allow heat to pass through completely

Explain why a glass window is considered transparent.

• It absorbs all the light that hits it

• It allows light to pass through without scattering or blocking.

• It emits light when hit by other light

• It reflects all the light that hits it