Georgia Science Grade 8

Chapter 19: Light, Mirrors, and Lenses

CRCT Practice

1
Which describes why a certain flower has a red color?
A)It reflects red light.
B)It absorbs red light.
C)It transmits red light.
D)It refracts red light.
2
Which describes the process occurring in the figure?

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A)refraction
B)diffuse reflection
C)regular reflection
D)total internal reflection
3
Which would be like the surface in the figure?

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A)a mirror
B)waxed paper
C)writing paper
D)a painted wall
4
If the girl is standing 1 m from the mirror, where will her image seem to be located?

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A)2 m behind the mirror
B)1 m behind the mirror
C)2 m in front of the mirror
D)1 m in front of the mirror
5
Which describes the image of the girl formed by the plane mirror?

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A)It will be upside down.
B)It will be in front of the mirror.
C)It will be larger than the girl.
D)It will be reversed left to right.
6
Which statement is always true about the image formed by a concave lens?
A)It is upside down and larger than the object.
B)It is upside down and smaller than the object.
C)It is upright and larger than the object.
D)It is upright and smaller than the object.
7
Through which of the following does light travel most slowly?
A)air
B)diamond
C)water
D)vacuum
8
What is the change in direction of a light wave due to a change in speed called?
A)reflection
B)diffraction
C)refraction
D)transmission
9
What type of object is shown in the figure?

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A)concave lens
B)convex lens
C)concave mirror
D)convex mirror
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