Quick Assessment - Light - Grade 9

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.

At what point is the laser being reflected?

• A

• B

• C

• D

Which of the following is the best example of an object absorbing light?

• A black sweater in the sun.

• A clean window in the sun.

• A curved mirror in the sun.

• A long shadow in the sun.

Which object refracted the laser beam?

• Silver locket

• Picture frame

• Glass marble

• Notebook

What makes it possible to see an object when looking through a periscope?

• It contains mirrors that reflect the object.

• It magnifies small objects so they can be seen.

• It bends the light rays passing through it.

• It separates the light into different colors.

A combination of all the wavelengths with in the visible light portion of the electromagnetic spectrum will result in which of the following colors?

• White

• Red

• Ultraviolet

• Black

A cut piece of clear glass or plastic in the form of a triangle or other geometric shape.

• Person

• Pyramid

• Prism

• Prison

When light strikes an object with a rough surface, photons bounce off at random angles.

• Exposure

• Rarefaction

• Scattering

• Bouncing

Allows little to no light through.

• Transparent
• Translucent
• Opal
• Opaque

A light year is...

• The speed of light

• How long it takes light to get to you from the sun

• The distance light can travel in a year

• The time taken for light to travel