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Multiple Choice
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1
In a crystal, molecules are arranged in regular patterns.
A)True
B)False
2
Since seawater becomes more dense as it cools, frozen seawater sinks to the ocean floor.
A)True
B)False
3
In boiling water, nearly all of the hydrogen bonds are broken.
A)True
B)False
4
Hydrogenbonds form when two hydrogens on different water molecules join together.
A)True
B)False
5
In general, negative ions tend to enter the oceans via volcanoes and hydrothermal vents, while positive ions tend to enter from weathering of rocks.
A)True
B)False
6
There should be less oxygen in tropical waters than in polar seas.
A)True
B)False
7
Water absorbs light of red wavelengths best.
A)True
B)False
8
Trade winds in the Northern Hemisphere result from air sinking at about 30° N latitude, traveling back toward the equator, and moving westward relative to the ground due to the Coriolis effect.
A)True
B)False
9
The Coriolis effect results from the fact that the earth's surface rotates more rapidly at the equator than at the poles.
A)True
B)False
10
The Westerlies blow eastward because they arise from air masses moving from a region of the globe spinning more slowly to a region spinning more rapdily.
A)True
B)False
11
The major ocean currents, called gyres, are caused mainly by the trade winds and westerlies moving the ocean water at an angle due to the Coriolis effect.
A)True
B)False
12
A floating object dropped off the east coast of Florida would more likely reach Europe before reaching Cuba.
A)True
B)False
13
Due to the gyre currents, surface waters are usually warmer on the east sides of oceans.
A)True
B)False
14
The longer the fetch is, the greater the mass of water that is transported by waves.
A)True
B)False
15
Waves begin to break and create surf when the wave energy begins to run into the seafloor.
A)True
B)False
16
In a normal semidiurnal tide lunar cycle, the time between a high tide and the next low tide is 6 hrs. 12 min.
A)True
B)False
17
The greatest differences between high and low tides occur when the sun and moon are at right angles to each other.
A)True
B)False
18
The tidal bulge that occurs on the earth's side opposite the moon is due to the centrifugal force of the earth rotating about a common earth-moon center of mass.
A)True
B)False
19
Because of the patterns of plate tectonic movements, there should be more tsunamis in the Pacific than in the Atlantic.
A)True
B)False
20
Below the main thermocline of the "three-layered ocean," there is no oxygen because there is neither photosynthesis nor a mechanism to transport oxygen to the depths.
A)True
B)False
21
Overturn usually occurs in the winters when an increase in water density is caused by cooling.
A)True
B)False
22
In summer, the surface layer of the "three-layered ocean" may develop a thermocline, a sharp transition between upper warm and deeper cold waters.
A)True
B)False
23
Among the major ions of seawater that follow the "rule of constant proportionality" is
A)Na+.
B)Cl-.
C)Mg++.
D)all of the above
E)both a and b above







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