Fronts/Winds
ESRT
Pressure Systems
Air Masses
Misc.
100
At both the warm front and cold front what occurs?
precipitation
100
Convert 20 degrees Celsius to Fahrenheit.
68 degrees F
100
Convert 29.47 inches to mb.
998 mb
100
State the names/symbols for a cold, dry air mass and a warm, wet air mass.
continental polar (cP) maritime tropical (mT)
100
A wind vane, barometer, anemometer, and sling psychrometer are instruments that measure what weather variables?
wind vane - wind direction barometer - air pressure anemometer - wind speed sling psychrometer - relative humidity/dewpoint
200
Describe what the symbols for a cold air mass/front and a warm air mass/front look like.
cold - line with triangles warm - line with half circles
200
What is the relative humidity when the dry bulb is 16 degrees Celsius and the wet bulb is 14 degrees Celsius?
80%
200
What factor most directly affects wind speed?
air pressure
200
An air mass with low humidity and high air temperatures would be labeled as what?
continental tropical (cT)
200
Precipitation occurs when air does what?
Rises (near Equator)
300
Weather along most fronts is usually cloudy with precipitation because the warm air........
rises and cools, causing condensation
300
When a station model does not have present weather or precipitation labeled, how else can they indicate a great probability for precipitation?
when the temperature and dewpoint are closest or the same
300
A high pressure center/system is characterized by what type of weather?
cool, dry weather
300
Due to the prevailing winds, air masses in the United States will move in what direction?
Northeast or East
300
Dewpoint is most directly affected by what?
water vapor, moisture
400
The rate of evaporation of water can be increased by.....
increasing air temperature, wind speed, and surface area
400
On a station model, if the air pressure is labeled 006 what is the actual air pressure?
1000.6 mb
400
How does air/wind move in the high pressure and low pressure systems?
high pressure - clockwise, away low pressure - counterclockwise, towards
400
Why does a desert form on the leeward side of the mountain? Or what does the air do on the leeward side?
air sinks, warms, and compresses
400
Moisture enters the atmosphere by what process?
evaporation
500
The curved paths of the planetary winds are a result of...
Earth's rotation
500
What is the dewpoint temperature if the dry bulb is 11 degrees Celsius and the wet bulb temperature is 8 degrees Celsius?
5 degrees Celsius
500
On a hot summer afternoon, low pressure air over LAND does what?
rises (sea breezes)
500
Why does the windward side of a mountain have a wet climate? Or what does air do on the windward side?
air rises, expands, cools, and condenses
500
In order for clouds to form, cooling air must have......
moisture (saturated), cooling temps., and dust particles (condensation nuclei)
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