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1 | |
Water is the only substance on earth that naturally occurs as a solid, liquid, and gas. |
| | A) | T |
| | B) | F |
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2 | |
Since seawater becomes more dense as it cools, frozen seawater sinks to the ocean floor. |
| | A) | T |
| | B) | F |
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3 | |
Many of the unique properties of water--for example, its high capacity and solvent properties--are due to its hydrogen bonds. |
| | A) | T |
| | B) | F |
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4 | |
Hydrogen bonds form when two hydrogens on different water molecules join together. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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6 | |
There should be less oxygen in tropical waters than in polar seas. |
| | A) | T |
| | B) | F |
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7 | |
Water absorbs light of blue wavelengths best, giving the oceans their color. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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9 | |
The Coriolis effect results from the fact that the earth's surface rotates more rapidly at the equator than at the poles. |
| | A) | T |
| | B) | F |
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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 rapidly. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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12 | |
A floating object dropped off the east coast of Florida would more likely reach Europe before reaching Cuba. |
| | A) | T |
| | B) | F |
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13 | |
Due to the gyre currents, surface waters are usually warmer on the east sides of oceans. |
| | A) | T |
| | B) | F |
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14 | |
The longer the fetch is, the greater the mass of water that is transported by waves. |
| | A) | T |
| | B) | F |
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15 | |
Waves begin to break and create surf when the wave energy begins to run into the seafloor. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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17 | |
The greatest differences between high and low tides occur when the sun and moon are at right angles to each other. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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19 | |
Because of the patterns of plate tectonic movements, there should be more tsunamis in the Pacific than in the Atlantic. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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21 | |
Overturn usually occurs in the winters when an increase in water density is caused by cooling. |
| | A) | T |
| | B) | F |
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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) | T |
| | B) | F |
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23 | |
Among the major ions of seawater that follow the "rule of constant proportionality" are |
| | A) | Na+ |
| | B) | Cl- |
| | C) | SO4-2 |
| | D) | all of the above. |
| | E) | both a and b above. |
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