Weather Variables
The measure of the average kinetic energy of molecules in the air.
What is air temperature?
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Weather is often associated with these.
What are pressure systems?
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Large bodies of air that have uniform temperature, humidity, and pressure.
What are air masses?
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A military boundary between opposing armies in a battle. A weather _____, however, is a boundary between two air masses.
What is a front?
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They issue watches and warnings for different types of severe weather.
Who is the U.S. National Weather Service?
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The amount of water vapor in the air.
What is humidity?
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The weight of the molecules in a large mass of air.
What is air pressure?
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These types of air masses form over oceans.
What are maritime air masses?
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When a cold air mass moves toward a warmer air mass a _____ forms.
What is a cold front?
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A ______ _____ is an specialized instrumint that can detect precipitation as well as the movement of small particles, which can be used to determine wind speed.
What is a doppler radar?
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The force that a column of air applies on the air or a surface below.
What is air pressure?
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A large body of circulating air with high pressure at its center and lower pressure outside.
What is a high-pressure system?
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These air masses form very near the equator.
What are tropical air masses?
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A ____ _____ forms when less dense, warmer air moves toward colder, denser air.
What is a warm front?
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_____ ___ ______ describes wind, temperature, and humidity conditions above Earth's surface.
What are upper-air reports?
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Air moves from areas of high pressure to areas of low pressure to make this.
What is wind?
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A large body of circulating air with low pressure at its center and higher pressure outside.
What is a low-pressure system?
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This classification of air mass forms over the Northern Atlantic.
What are maritime polar air masses?
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An air mass that stalls for a long time over a certain place is called a ________ _____.
What is a stationary front?
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Lines that all places on a map where pressure has the same value.
What are isobars?
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The temperature at which air is saturated, and condensation can occur.
What is the dew point?
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Condensed air from low-pressure systems are these.
What are clouds?
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These air masses form over the western Atlantic and the Gulf of Mexico.
What are maritime tropical air masses?
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When a fast-moving cold front catches up to a slower-moving warm front an ________ _____ forms.
What is an occluded front?
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The _____ _____ is a series of natural processes by which water continually moves along oceans, land, and the atmosphere.
What is the water cycle?
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