True/False
Indicate whether the sentence or statement is true or
false.
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1.
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Light waves do not need a
medium to travel through.
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2.
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When light strikes a
transparent material, most of the light is reflected.
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3.
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The primary light colors are
red, green, and blue.
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4.
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Paper does not reflect light
very well because its surface is somewhat rough.
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5.
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The image in a plane mirror can
be upright or inverted depending on where the object is.
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6.
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The image in a convex mirror is
always upright, and is smaller than the object.
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7.
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A concave lens is a diverging
lens.
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8.
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An optical fiber can make a
light beam travel in a path that is curved or twisted.
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Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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9.
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The material in which a wave
travels is called ____. a. | a medium | c. | air | b. | water | d. | opaque | | | | |
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10.
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Glass is an example of a ____
material. a. | translucent | c. | opaque | b. | medium | d. | transparent | | | | |
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11.
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If an object looks blue, it
reflects ____ waves. a. | blue | c. | all but blue | b. | red and yellow | d. | all | | | | |
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12.
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How can you describe the image
formed by a plane mirror? a. | inverted and
reversed | c. | upright and reversed | b. | inverted and not
reversed | d. | upright and not reversed | | | | |
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13.
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How would you describe the
image formed by a convex mirror? a. | upright and larger than
object | c. | inverted and larger than object | b. | upright and smaller than object | d. | inverted and smaller than
object | | | | |
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14.
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If light waves change speed
when they pass from one medium into another, the light will be ____. a. | diffracted | c. | separated | b. | reflected | d. | refracted | | | | |
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15.
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Which one of the following is
thick in the middle and thin at the edges? a. | concave
lens | c. | concave mirror | b. | convex
lens | d. | plane mirror | | | | |
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Matching
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Match the letter of each
lens or mirror shown in Figure 4O-1 with the correct description below. Answers may be used more than
once.
Figure 4O-1
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16.
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convex mirror
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17.
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convex lens
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18.
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concave lens
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19.
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plane mirror
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20.
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concave mirror
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21.
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produces an upright, reversed
image
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Completion
Complete each sentence or statement.
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22.
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A(n) ____________________ is
one narrow beam of light traveling in a straight line.
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23.
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Waxed paper and frosted glass
are examples of materials that are ____________________.
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24.
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The law of reflection states
that the angle of ____________________ is equal to the angle of ____________________.
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25.
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The reflection of light waves
from a rough surface is ____________________ reflection.
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26.
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The straight line that is drawn
perpendicular to the center of a concave or convex mirror is the ____________________.
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27.
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A magnifying glass is a
____________________ lens.
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28.
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Reflecting telescopes use a(n)
____________________ instead of an objective lens to gather light from a distant
object.
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29.
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A(n) ____________________ lens
is used in a camera.
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Short
Answer
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30.
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Give evidence that light
behaves like a wave.
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31.
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How do we know that light
doesn't need a medium in which to travel?
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32.
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Explain the law of
reflection.
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