Multiple Choice
Identify the choice
that best completes the statement or answers the question.
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1.
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The crust and the very top, crunchy part of
the mantle make up Earth's ____.
a. | lithosphere | c. | core | b. | asthenosphere | d. | continents |
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2.
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Plates of the lithosphere float on the very top,
gooey part of the mantle called the ____.
a. | crust | c. | core | b. | asthenosphere | d. | atmosphere |
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3.
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The presence of the same ____ on several continents
supports the hypothesis of continental drift.
a. | fossils | c. | neither a nor b | b. | type of ancient
buildings | d. | both a and b |
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4.
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The hypothesis that continents have slowly moved to
their current locations is called ____.
a. | continental drift | c. | magnetic reversal | b. | continental
slope | d. | convection |
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5.
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Because Wegener could not explain how continents
moved many scientists would not believe that a single supercontinent called ____ once
existed.
a. | Glomar | c. | Pangaea | b. | Glossopteris | d. | Wegener |
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6.
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Continental drift states that continents have moved
____ to their current location.
a. | vertically | c. | quickly | b. | slowly | d. | very little |
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7.
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Wegener believed that the continents originally
broke apart about ____ years ago.
a. | 200 million | c. | 400
million | b. | 300 million | d. | 500
million |
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8.
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Which is the thickest layer of the
Earth?
a. | crust | c. | mantle | b. | inner
core | d. | outer core |
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9.
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Fossils of the fern Glossopteris have been found in
Africa, Australia, South America, and Antarctica. How do scientists explain this
observation?
a. | The wind blew the seeds across the oceans from continent
to continent. | b. | The fern developed
independently on each continent. | c. | The continents
were at one time joined together and then moved apart. | d. | The fern had adaptations to survive the different environments of the
continents. |
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10.
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Which of these statements about Earth's crust
is true?
a. | It is a layer of solid rock that remains the same
throughout time. | b. | It includes the
continents, but not the ocean floor. | c. | It is a changing,
moving surface with the same thickness everywhere. | d. | It is a system of large masses called plates that slowly move together or
apart. |
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11.
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Compared to rocks in Earth's crust, rocks in
the mantle are more
a. | dense. | c. | granular. | b. | mineral-rich. | d. | porous. |
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12.
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If we compare the temperature and pressure of the
Earth's mantle to the core, what differences can we expect as we move downward into the
Earth?
a. | Both the temperature and pressure
increase. | b. | Both the temperature and pressure
decrease. | c. | The temperature decreases and the pressure
increases. | d. | The temperature
increases and the pressure decreases. |
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13.
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A fossil plant that helps support the theory of
continental drift is ____.
a. | Mimosa | c. | Glomar | b. | Glossopteris |
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14.
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According to Wegener’s hypothesis of
continental drift,
a. | the continents were once joined together in one giant
landmass. | b. | the continents do not move. | c. | Earth is slowly cooling and shrinking. |
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15.
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Which type of evidence was NOT used by Alfred
Wegener to support his continental drift hypothesis?
a. | evidence from landforms | b. | evidence from fossils | c. | evidence from
human remains |
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