Multiple Choice
Identify the choice
that best completes the statement or answers the question.
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1.
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For frost to be on the grass in the morning, the
water vapor in the air must
a. | evaporate and freeze. | c. | condense and freeze. | b. | boil and
condense. | d. | boil and evaporate. |
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2.
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The floor of the ocean
a. | is smooth and sandy. | c. | has rivers and lakes. | b. | has mountains and
trenches. | d. | is hidden and unknown |
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3.
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On most ocean shorelines, the water rises slowly
and covers the land twice a day. Then it slowly falls back. What is this movement
called?
a. | current | c. | tide | b. | wave | d. | drift |
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4.
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Which contains the greatest amount of
Earth's freshwater?
a. | groundwater | c. | lakes
and rivers | b. | oceans and
seas | d. | glaciers and polar ice cap |
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5.
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Dew is formed by
a. | the condensation of water
vapor. | b. | frost melting just before
sunrise. | c. | groundwater being pulled to Earth's
surface. | d. | transpiration performed by
plants. |
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6.
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The salts in the sea come from
a. | weathering and erosion of rocks. | c. | particles falling from space. | b. | acid rain. | d. | organisms that live in the
sea. |
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7.
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Which term refers to the area at the seashore that
is underwater during high tide and exposed during low tide?
a. | intertidal zone | c. | open-ocean zone | b. | neritic
zone | d. | mid-ocean zone |
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8.
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Which are the two most abundant elements dissolved
in seawater?
a. | Ca and Cl | c. | Na and
Cl | b. | Na and Mg | d. | Mg and
Ca |
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9.
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The ocean's tides are caused by
a. | heat from the Sun. | c. | vibrations within Earth. | b. | the Moon's
gravity. | d. | strong winds. |
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10.
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High spring tides generally result
from
a. | mild earthquake activity. | b. | heavy spring rains. | c. | the alignment of
Earth, the Moon, and the Sun. | d. | thawing polar ice
caps. |
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11.
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The section of a continent that lies just off the
shoreline and extends beneath the ocean is called the continental
a. | plain. | c. | basin. | b. | shelf. | d. | ridge. |
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12.
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Which process is most important to the water
cycle?
a. | flooding | c. | evaporation | b. | erosion
| d. | farm irrigation |
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13.
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What causes the outside of the windshield of a car
to get icy on a cold autumn night when there is no rain?
a. | Moisture comes from inside the car and freezes.
| b. | Water vapor from the air freezes on the glass.
| c. | Water that is already on the glass freezes.
| d. | Hydrogen and oxygen in the air combine and form water,
and it freezes |
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14.
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During the water cycle, when water vapor changes to
liquid water, it is called
a. | evaporation. | c. | freezing. | b. | condensation. | d. | boiling. |
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15.
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In the morning, Mary noticed there was dew on the
grass. In the afternoon, the grass was dry. What most likely happened to the water?
a. | It went into the ground. | c. | It formed clouds. | b. | It went into the
air. | d. | It no longer exists |
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16.
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Which two physical changes are essential processes
in the water cycle?
a. | oxidation and reduction | c. | mixing and separating | b. | evaporation and condensation | d. | ebbing and
flowing |
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17.
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Which of these causes ocean waves?
a. | density differences | c. | the moon's gravity | b. | the Sun’s
Gravity | d. | the wind |
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18.
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Tropical seas have a high rate of evaporation.
Because of this, the water in tropical seas will have higher:
a. | wave crests. | c. | daily
temperatures. | b. | amounts of
algae. | d. | salt concentrations. |
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19.
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Only 3% of the water on Earth is freshwater. About
60% of that water is not available for man's use. Why is this?
a. | it is frozen | c. | it is
too salty | b. | it is polluted | d. | it is in
aquifers |
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20.
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Use this picture and your knowledge to answer this
question.
At which ocean feature would the greatest
amount of water pressure be exerted?
a. | Continental shelf | c. | Abyssal plain | b. | Continental
slope | d. | Trench |
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21.
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Most of the water on the Earth is
found
a. | in river and a lakes | c. | in the oceans | b. | underground | d. | in the polar
icecaps |
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22.
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The amount of water on the earth
a. | is always increasing because of
rain | b. | is never the same because we keep using
it | c. | changes from year to year because of the
weather | d. | stays the same |
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23.
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How does the amount of freshwater compare to the
amount of saltwater?
a. | there is more freshwater | c. | there is twice as much saltwater | b. | there is the same amount of each | d. | there is only a
tiny amount of freshwater |
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24.
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The Earth’s surface
a. | has the same amount of land and
water | b. | is covered mostly by land | c. | is covered by more water than land | d. | has about three times more water than
land |
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25.
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Most of the Earth’s freshwater is
found
a. | in lakes and rivers | c. | in the atmosphere | b. | in the
groundwater | d. | in icecaps and glaciers |
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26.
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Why is it important not to have a well for drinking
water near a landfill?
a. | it might get hit by a garbage
truck | b. | the well might flood the garbage
dump | c. | pollution from the dump might leach down into the
aquifer | d. | it is alright to dig a well near a
landfill |
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27.
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Waves are caused by
a. | the Moon’s gravity | c. | rivers flowing into the ocean | b. | the wind | d. | changes in
temperature |
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28.
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Which of these are true about the
tides?
a. | they are caused by the wind | b. | they can happen at any time and are unpredictable | c. | they are caused by the Moon and change every 6
hours | d. | there is one high tide and one low tide every 24
hours |
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29.
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Which of these statements about currents is
true?
a. | all currents are caused by the
wind | b. | all currents are caused by the
sun | c. | some currents are caused by a difference in either
density or temperature | d. | all currents move
in the same direction |
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30.
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Which of these is the largest ocean?
a. | Atlantic | c. | Indian | b. | Pacific | d. | Southern |
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31.
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Where will you find the tallest mountains on
Earth?
a. | in Alaska, Denali | b. | in Washington state, Mt. Ranier | c. | Mt. Everest in the Himalayas | d. | the Island of Hawaii is the tallest mountain on
Earth |
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32.
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The flattest place on Earth is
a. | in Oklahoma on the Great Plains | c. | the Abyssal Plain | b. | the Sahara
Desert | d. | the continental shelf |
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33.
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The total salinity of the world’s oceans
is
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34.
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In order from greatest amount to least amount, the
Earth’s water is
a. | salt water, frozen fresh water, liquid fresh
water | b. | fresh water, salt water, frozen fresh
water | c. | frozen fresh water, salt water, liquid fresh
water | d. | fresh water, frozen fresh water, salt
water |
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35.
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The scientific name for all the water on the Earth
is
a. | the ocean | c. | the
hydrosphere | b. | the
lithosphere | d. | the atmosphere |
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