py101 review quiz chapter 4

Question 1
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Light, the stimulus for vision, is
Select one:

a. a form of chemical energy.

b. a form of mechanical energy.

c. a form of electromagnetic radiation.

d. the result of vibrations of molecules.
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The correct answer is:
c.
a form of electromagnetic radiation.
Question 2
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If a person views three lights that differ only in amplitude, the person would perceive the lights as
Select one:

a. differing in brightness.

b. different colors.

c. differing in brightness and color.

d. differing in purity.
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The correct answer is:
a.
differing in brightness.
Question 3
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The lens in the eye
Select one:

a. converts light energy into neural energy.

b. controls the amount of light entering the eye.

c. bends entering light rays and focuses them onto the retina.

d. is the part of the eye that gives it its color.
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The correct answer is:
c.
bends entering light rays and focuses them onto the retina.
Question 4
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As people age, the lens of the eye loses its ability to accommodate, and it tends to remain flat instead of becoming fat and round. This suggests that as people age they will
Select one:

a. lose their ability to focus on objects in the distance.

b. be less likely to detect differences in light purity.

c. be more likely to detect differences in brightness and hue.

d. lose their ability to focus on objects that are close.
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The correct answer is:
d.
lose their ability to focus on objects that are close.
Question 5
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While ____ are the receptor cells for color vision, ____ allow us to see in dim light.
Select one:

a. cones; rods

b.