Science 8 Light and Optics review

When a laser beam strikes a mirror at 32 degrees from the normal, what angle is formed in the reflected beam from the normal?

• 32 degrees

• 64 degrees

• 90 degrees

• It varies depending on the mirror size

Reflection is the process in which light strikes a surface and bounces off that surface. The reflected ray will bounce back directly to the light source if it is lined up with the ...

• Incident ray

• Reflected ray

• Normal line

• Reflecting surface

What part of the eye allows light inside?

• Cornea

• Pupil

• Retina

• Lens

In stating the law of reflection, that the angle of incidence equals the angle of reflection it is necessary to understand that this is a law because ...

• A scientist has stated it

• This relationship happens most of the time

• This relationship always happens

• Science is always accurate and precise

When white light shines on an object, what happens to the different colors of light?

• They combine to form black light

• They are absorbed by the object

• They are reflected or absorbed by the object

• They disappear

Mirages cause an illusion of a watery surface. This illusion is actually ...

• water drops reflecting the light

• water drops refracting the light

• the sky refracted by warm air

• the sky reflected by warm air

When light passes through a lens, the light is bent, causing the rays of light to diverge. The type of lens is a?

• convex lens

• concave lens

• optic lens

• diamond prism lens

Which of the following colors is NOT a primary color of light?

• Blue

• Green

• Yellow

• Red

When comparing the eye and the camera, certain parts perform the same function. The retina of the eye is similar to the part of the camera called the ...

• Film

• Shutter

• Diaphragm

• focusing ring

When the primary colors of light - red, green, and blue - are added together, this color is produced.

• Yellow

• Magenta

• Cyan

• White