Light Sec 1 G3 Quiz 1

The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:

• mirror

• laser

• reflection

• refraction

Answer explanation

The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called reflection.

What is the best description of an opaque material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

Answer explanation

The best description of an opaque material is that no light passes through the material, making it completely non-transparent.

What is the best description of a transparent material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

Answer explanation

The best description of a transparent material is that all light passes through the material.

What is the best description of a translucent material?

• no light passes through the material

• some light passes through the material

• all light passes through the material

Answer explanation

The best description of a translucent material is that some light passes through the material.

What type of object is shown in the picture?

• opaque

• transparent

• translucent

Answer explanation

The object shown in the picture is translucent because it allows some light to pass through but is not completely transparent or opaque.

The ray of light that strikes a reflecting surface is called ________.

• incident ray

• reflected ray

• normal ray

• none of the above

Answer explanation

The correct term for the ray of light that strikes a reflecting surface is the incident ray, making it the correct choice among the options provided.

When a light ray bounces off a rough surface, it reflects all over the place

• Diffraction

• Reverberation

• Scattering

• Transmission

Answer explanation

When a light ray bounces off a rough surface, it reflects all over the place, a phenomenon known as scattering.

When this occurs, light rays pass from one transparent medium to another transparent medium.

• Absorbtion

• Transmission

• Relfection

• Refraction

Answer explanation

When light rays pass from one transparent medium to another, it is called refraction.

Which of these provides the best explanation for why the pencil appears broken?

• The pencil absorbs the light rays that hit it.

• Water reflects light rays away from the pencil.

• Light rays are bent by the water in the glass.

• The surface of the water reflects the light rays.

Answer explanation

Light rays are bent by the water in the glass.

Light travels in straight lines until reflected by another object. Which illustration best shows the light being reflected?

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