Physical Science: Waves, Sound, and Light, Book O

Section 3: Refraction and Lenses

Self-Check Quiz-Eng.

1.
The speed of light is __________.
A)faster in water than in air
B)slower in water than in air
C)the same speed in water and air
D)fastest in water
2.
What causes light waves to refract?
A)The speed of light remains constant.
B)The speed of light is reduced to zero.
C)The speed of light changes from one medium to the next.
D)The light is repelled by some materials.
3.
All lenses have __________.
A)at least one curved side
B)only one curved side
C)two curved sides
D)no curves at all
4.
The image formed by a concave lens is similar to that formed by a __________.
A)convex lens
B)concave mirror
C)plane mirror
D)convex mirror
5.
Which is an example of a convex lens?
A)nearsighted eyeglasses
B)a car windshield
C)a side mirror on a car
D)magnifying glass
6.
Where does an image form on the eye?
A)the retina
B)the lens
C)the optic nerve
D)the cornea
7.
To correct nearsightedness, which lenses should be used?
A)concave
B)convex
C)plane
D)reflecting
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