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23 Cards in this Set
- Front
- Back
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What is water?
A. Hydrogen and oxygen units B. A polar molecule C. A substance with a high specific heat D. All of the above |
D. All of the above
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As the temperature of water rises, which of these happens?
A. Water molecules pack together B. Bonds form between hydrogen atoms in different water molecules C. Water molecules move more slowly D. Water molecules break free of hydrogen bonds |
D. Water molecules break free of hydrogen bonds
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Water is most dense
A. At 4°C B. At 3°C C. In ice D. When it freezes |
A. At 4°C
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In boiling water, nearly all of the hydrogen bonds are broken.
A. True B. False |
A. True
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Some desert lakes have the same salinity as seawater, but cannot serve as homes for marine fishes in culture. Why might this be so?
A. The amount of dissolves salts is not the same B. The water is too hot C. The oxygen concentration is too low D. The ration of ions in the total salinity is different from that in seawater |
D. The ratio of ions in the total salinity is different from that in seawater
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Which of these animals probably could undergo vertical movement in the water with the least difficulty from changes in pressure?
A. A fish with a swim bladder B. A seal C. A whale D. A deep-sea shrimp |
D. A deep-sea shrimp
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Salinity may not vary much from the surface to the depths far out at sea. If so, it would be easiest and least expensive to measure temperature versus depth with which devices?
A. XBTs B. CTDs C. Bottles with thermometers that "freeze" D. Satellite data |
A. XBTs
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To produce artificial salt water for an aquarium, a supply company must be particularly careful of the concentration of all of these ions but which one?
A. Sodium B. Calcium C. Chloride D. Fluoride |
D. Fluoride
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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 |
A. True
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During summer, a satellite map of sea surface temperatures for the coasts of the USA usually shows very cold water off California. Why might this be so?
A. California lies father north than most states of the USA and thus is colder B. The current in the area runs from north to south C. Eastern sides of oceans generally are warmer than western sides D. The Coriolis effect deflects currents to the left in the northern hemisphere. |
B. The current in the area runs from north to south
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The longer the fetch is, the greater the mass of water that is transported by waves
A. True B. False |
B. False
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Trade winds in the Northern Hemisphere result from air sinking at about 30° north latitude, traveling back toward the equator, and moving westward relative to the ground due to the Coriolis effect.
A. True B. False |
A. True
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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. True B. False |
B. False
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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 |
A. True
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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 |
B. False
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In shelf waters, the main thermocline
A. Is a 1,500 meters or deeper B. Separates the mixed layer from the deep layer C. Is a result of solar heating D. May not exist |
D. May not exist
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The biggest ocean waves of all are just north of Antarctica. Why might this be so?
A. Unlike the Arctic Ocean, the Southern Ocean has a land mass within it. B. The weather is the worst on Earth in Antarctica C. Waves in the Southern Ocean can go around the world, and thus have the longest fetch D. Cold seas have bigger waves than warm ones |
C. Waves in the Southern Ocean can go around the world, and thus have the longest fetch
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Waves begin to break and create surf when the wave energy begins to run into the seafloor.
A. True B. False |
A. True
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The highest tides occur
A. When the sun and moon are at right angles to the Earth B. When the moon comes closest to the Earth C. Only in spring D. When the sun, moon, and earth are in line |
D. When the sun, moon, and Earth are in line
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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 |
B. False
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In a normal semidiurnal tide lunar cycle, the time between a high tide and the next low tide is 6 hours 12 minutes
A. True B. False |
A. True
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A serious warning sign of an oncoming tsunami is
A. An earthquake in the Pacific Ocean B. Water receding out to sea, exposing reefs and leaving fish out of the water C. High waves in the open sea D. Very short wave lengths |
B. Water receding out to sea, exposing reefs and leaving fish out of the water
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Because of the patterns of plate tectonic movements, there should be more tsunamis in the Pacific than in the Atlantic.
A. True B. False |
A. True
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