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What do isobars look like in an area of high wind speed?
They are close together
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a)An adiabatic temperature change in a gas, is caused by a change in what?
b)When a gas expands, does it cool or warm?
a)Pressure
b)It cools
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Does dry air exert high or low pressure?
High pressure
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Does cold air exert high or low pressure?
High pressure
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Describe the lowest possible pressure air.
(Temperature and humidity description)
Warm and humid
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The temperature at which condensation occurs is called the what?
Dew Point
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How does the dew point increase ?
Water vapor is added to the air.
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Can changing the temperature change the dew point?
NO Temperature is not related to dew point.
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On a station model, if the pressure number is under 500, what do you have to add to the number to record it correctly ?
Add a 10 in front, and a decimal one place in from the right.
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Wind blows from high pressure areas to low pressure areas. True or False?
TRUE
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Falling pressure generally indicates bad weather arriving. True or False ?
True
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Cumulonimbus clouds, heavy, brief rain, and thunderstorms are associated with a __________ front.
Cold
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As the temperature gets cooler, and closer to the dew point, the relative humidity does what?
Increases
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What kind of air holds the most moisture?
(warm or cold)
Warm air
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As the temperature drops, (if there is no change in the absolute humidity) the relative humidity does what?
Increases
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Relative humidity is defined as : the amount of moisture in the air compared to what?
-compared to the amount of moisture the air can hold.
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Describe a cT and an mP air mass.
cT dry and warm
mP moist and cold
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An air mass that formed over the Gulf of Mexico would be labeled with what symbols?
mT
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After a cold front passes, what does the pressure do?
Pressure increases (cold air is high pressure)
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A cold front running into a warm front creates a what?
An occluded front
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Describe the air movement in a low pressure system.
ccw and toward the center
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Describe the air movement in a high pressure system.
clockwise and away from the center
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In relationship to a warm front, where does it rain?
In front of the warm front
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What type of rain, and clouds are associated with a warm front?
long term, light rain (drizzle) and stratus clouds
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What causess wind?
Differences in pressure
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