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25 Cards in this Set
- Front
- Back
the most abundant gaseous components of the Earth's atmosphere are:
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nitrogen and oxygen.
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the boundary between two air masses is called a(n):
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front.
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seasons are caused by
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the earth's orbital tilt relative to the plane of its orbit around the sun.
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weather may be defined as
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short term, localized characteristics of the atmosphere.
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when air masses come together,
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one air mass may ride up and over the other and form a front.
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earth rotates eastward about
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impossible to say without more imformation
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the power for tropical cyclones comes from
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the condensation of warm, moist air.
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an air mass is a large body of air with nearly uniform temperature, humidity and therefore density throughout. true or false.
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TRUE
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according to the atmospheric circulation model developed in the text, air tends to
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rise at 60º north and fall at 30º north.
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the coriolis effect causes objects moving in the northern hemisphere to veer off course
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to the right, or clockwise when viewed from above.
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tropical cyclones never leave the tropics. true or false
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false.
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tropical cyclones tend to move
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westward and poleward in both hemispheres.
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when viewed from above, tropical cyclones rotate ________ in the SOUTHERN hemisphere.
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clockwise.
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hurricane andrew, the most costly natural disaster to strike the united states, was a violent example of
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a tropical cyclone
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extratropical cyclones typically form
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near the junction between the hadley cells and the ferrel cells.
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if you were standing on top of a high mid-pacific island at 15º latitude, from which direction would you expect the wind to come?
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northeast.
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which of these phenomena causes the LEAST structural damage and loss of life during the passage of a tropical cyclone?
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low atmospheric pressure.
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hot air ______, while cool air ______.
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expands and rises...contracts and sinks.
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tropical cyclones are also called:
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(all of these are the same things, with different names.)
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the meteorological equator
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all of the above.
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winds generally move across the united states
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from west to east.
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areas of vertical air movement (very little surface wind motion) are found on the Earth at latitudes
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0º and 30º.
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the dependable surface winds of the Earth centered at about 15º north and south latitudes are called:
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the trade winds.
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there are _____ main wind bands in each hemisphere of the Earth.
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3.
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earth is "tilted" at about 23 1/2º relative to its orbital plane around the sun. this causes
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all of these things.
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