1qr. Explain why atmospheric pressure always decreases with increasing altitude. Get solution
1qt. The gas law states that pressure is proportional to temperature times density. Use the gas law to explain why a basketball seems to deflate when placed in a refrigerator. Get solution
2qr. What might cause the air pressure to change at the bottom of an air column? Get solution
2qt. Can the station pressure ever exceed the sea-level pressure? Explain. Get solution
3qr. Why is the decrease of air pressure with increasing altitude more rapid when the air is cold? Get solution
3qt. Get solution
4qr. What is considered standard sea-level atmospheric pressure in millibars? In inches of mercury? In hectopascals? Get solution
4qt. The pressure gradient force causes air to move from higher pressures toward lower pressures (perpendicular to the isobars), yet actual winds rarely blow in this fashion. Explain why they don’t. Get solution
5qr. Get solution
5qt. The Coriolis force causes winds to deflect to the right of their intended path in the Northern Hemisphere, yet around a surface low-pressure area, winds blow counterclockwise, appearing to bend to their left. Explain why. Get solution
6qr. With the aid of a diagram, describe how a mercury barometer works. Get solution
6qt. Explain why, on a sunny day, an aneroid barometer would indicate “stormy” weather when carried to the top of a hill or mountain. Get solution
7qr. Get solution
7qt. Pilots often use the expression “high to low, look out below.” In terms of upper-level temperature and pressure, explain what this can mean. Get solution
8qr. How does sea-level pressure differ from station pressure? Can the two ever be the same? Explain. Get solution
8qt. Get solution
9qr. Why will Denver, Colorado, always have a lower station pressure than Chicago, Illinois? Get solution
9qt. If the earth were not rotating, how would the wind blow with respect to centers of high and low pressure? Get solution
10qr. What are isobars? In what increment are they usually drawn on a surface weather map? Get solution
10qt. Why are surface winds that blow over the ocean closer to being geostrophic than those that blow over the land? Get solution
11qr. On an upper-level map, is cold air aloft generally associated with low or high pressure? What about warm air aloft? Get solution
11qt. In the Northern Hemisphere, you observe surface winds shift from N to NE to E, then to SE. From this observation, you determine that a west-to-east moving high-pressure area (anticyclone) has passed north of your location. Describe with the aid of a diagram how you were able to come to this conclusion. Get solution
12qr. What do Newton’s first and second laws of motion tell us? Get solution
12qt. As a cruise ship crosses the equator, the entertainment director exclaims that water in a tub will drain in the opposite direction now that the ship is in the Southern Hemisphere. Give two reasons to the entertainment director why this assertion is not so. Get solution
13qr. What does a steep (or strong) pressure gradient mean? How would it appear on a surface map? Get solution
14qr. Get solution
15qr. What is the name of the force that initially sets the air in motion and, hence, causes the wind to blow? Get solution
16qr. Explain why, on a map, closely spaced isobars (or contours) indicate strong winds, and widely spaced isobars (or contours) indicate weak winds. Get solution
17qr. What does the Coriolis force do to moving air (a) in the Northern Hemisphere? (b) in the Southern Hemisphere? Get solution
18qr. Explain how each of the following influences the Coriolis force: (a) wind speed (b) latitude. Get solution
19qr. Why do upper-level winds in the middle latitudes of both hemispheres generally blow from west to east? Get solution
20qr. What is a geostrophic wind? On an upper-level chart, how does it blow? Get solution
21qr. What are the forces that affect the horizontal movement of air? Get solution
22qr. Describe how the wind blows around high-pressure areas and low-pressure areas aloft and near the surface (a) in the Northern Hemisphere; and (b) in the Southern Hemisphere. Get solution
23qr. If the clouds overhead are moving from north to south, would the upper-level center of low pressure be to the east or west of you? Get solution
24qr. On a surface map, why do surface winds tend to cross the isobars and flow from higher pressure toward lower pressure? Get solution
25qr. Since there is always an upward-directed pressure gradient force, why doesn’t air rush off into space? Get solution
26qr. List as many ways as you can of determining wind direction and wind speed. Get solution
27qr. Below is a list of instruments. Describe how each one is able to measure wind speed, wind direction, or both. (a) wind vane (b) cup anemometer (c) aerovane (skyvane) (d) radiosonde (e) satellite (f) wind profiler Get solution
28qr. An upper wind direction is reported as 225°. From what compass direction is the wind blowing? Get solution
1qt. The gas law states that pressure is proportional to temperature times density. Use the gas law to explain why a basketball seems to deflate when placed in a refrigerator. Get solution
2qr. What might cause the air pressure to change at the bottom of an air column? Get solution
2qt. Can the station pressure ever exceed the sea-level pressure? Explain. Get solution
3qr. Why is the decrease of air pressure with increasing altitude more rapid when the air is cold? Get solution
3qt. Get solution
4qr. What is considered standard sea-level atmospheric pressure in millibars? In inches of mercury? In hectopascals? Get solution
4qt. The pressure gradient force causes air to move from higher pressures toward lower pressures (perpendicular to the isobars), yet actual winds rarely blow in this fashion. Explain why they don’t. Get solution
5qr. Get solution
5qt. The Coriolis force causes winds to deflect to the right of their intended path in the Northern Hemisphere, yet around a surface low-pressure area, winds blow counterclockwise, appearing to bend to their left. Explain why. Get solution
6qr. With the aid of a diagram, describe how a mercury barometer works. Get solution
6qt. Explain why, on a sunny day, an aneroid barometer would indicate “stormy” weather when carried to the top of a hill or mountain. Get solution
7qr. Get solution
7qt. Pilots often use the expression “high to low, look out below.” In terms of upper-level temperature and pressure, explain what this can mean. Get solution
8qr. How does sea-level pressure differ from station pressure? Can the two ever be the same? Explain. Get solution
8qt. Get solution
9qr. Why will Denver, Colorado, always have a lower station pressure than Chicago, Illinois? Get solution
9qt. If the earth were not rotating, how would the wind blow with respect to centers of high and low pressure? Get solution
10qr. What are isobars? In what increment are they usually drawn on a surface weather map? Get solution
10qt. Why are surface winds that blow over the ocean closer to being geostrophic than those that blow over the land? Get solution
11qr. On an upper-level map, is cold air aloft generally associated with low or high pressure? What about warm air aloft? Get solution
11qt. In the Northern Hemisphere, you observe surface winds shift from N to NE to E, then to SE. From this observation, you determine that a west-to-east moving high-pressure area (anticyclone) has passed north of your location. Describe with the aid of a diagram how you were able to come to this conclusion. Get solution
12qr. What do Newton’s first and second laws of motion tell us? Get solution
12qt. As a cruise ship crosses the equator, the entertainment director exclaims that water in a tub will drain in the opposite direction now that the ship is in the Southern Hemisphere. Give two reasons to the entertainment director why this assertion is not so. Get solution
13qr. What does a steep (or strong) pressure gradient mean? How would it appear on a surface map? Get solution
14qr. Get solution
15qr. What is the name of the force that initially sets the air in motion and, hence, causes the wind to blow? Get solution
16qr. Explain why, on a map, closely spaced isobars (or contours) indicate strong winds, and widely spaced isobars (or contours) indicate weak winds. Get solution
17qr. What does the Coriolis force do to moving air (a) in the Northern Hemisphere? (b) in the Southern Hemisphere? Get solution
18qr. Explain how each of the following influences the Coriolis force: (a) wind speed (b) latitude. Get solution
19qr. Why do upper-level winds in the middle latitudes of both hemispheres generally blow from west to east? Get solution
20qr. What is a geostrophic wind? On an upper-level chart, how does it blow? Get solution
21qr. What are the forces that affect the horizontal movement of air? Get solution
22qr. Describe how the wind blows around high-pressure areas and low-pressure areas aloft and near the surface (a) in the Northern Hemisphere; and (b) in the Southern Hemisphere. Get solution
23qr. If the clouds overhead are moving from north to south, would the upper-level center of low pressure be to the east or west of you? Get solution
24qr. On a surface map, why do surface winds tend to cross the isobars and flow from higher pressure toward lower pressure? Get solution
25qr. Since there is always an upward-directed pressure gradient force, why doesn’t air rush off into space? Get solution
26qr. List as many ways as you can of determining wind direction and wind speed. Get solution
27qr. Below is a list of instruments. Describe how each one is able to measure wind speed, wind direction, or both. (a) wind vane (b) cup anemometer (c) aerovane (skyvane) (d) radiosonde (e) satellite (f) wind profiler Get solution
28qr. An upper wind direction is reported as 225°. From what compass direction is the wind blowing? Get solution