 |
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 | |
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. |
|
|
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 | |
A diver sees a shark, panics, and holds his breath while going to the surface from a depth of 30 m (98 feet). What is likely to happen? |
| | A) | He will be safe because of the increase of the amount of air in his lungs as he goes up. |
| | B) | His lungs will collapse. |
| | C) | On release of water pressure, his lungs will expand and may burst. |
| | D) | The air will go back into his scuba tank. |
|
|
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 | |
During summer, a satellite map of sea surface temperatures for the coasts of the U.S.A. usually shows very cold water off California. Why might this be so? |
| | A) | California lies farther north than most states of the U.S.A. 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. |
|
|
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 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 the Earth are in line. |
|
|
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 | |
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 |
|