Weather Study Guide – Flashcards
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Air Mass
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a body of air that has about the same temperature and moisture throughout
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Cold Front
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the dense, cold air pushes under the existing warm air—makes short-lived but violent thunderstorms
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Warm Front
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the light, warm air slides in over the existing cold air—makes long-lived rain and drizzle
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How much of our atmosphere is made up of Nitrogen?
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78%
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What is the Nitrogen Cycle?
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A process that keeps Nitrogen constant in our atmosphere: Air to bacteria to soil to animals to waste back to air.
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What is the Ozone Layer?
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The layer of O3 that absorbs harmful ultraviolet radiation from Sun.
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Where is the Troposphere?
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It is closest to the Earth.
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What is the Greenhouse effect?
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Heat from the Sun can go through the atmosphere and warm Earth, but gets trapped and doesn't go back out.
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Name 4 Greenhouse gases.
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Methane, Carbon Dioxide, and Water Vapor.
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What is Adiabatic Cooling?
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The process by which the temperature of an air mass decreases as the air mass rises and expands.
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What is a Cirrus cloud?
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The highest clouds in the sky, composed of ice crystals and has the highest altitude of any cloud in the sky.
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What are isotherms?
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They connect areas of equal temperature on a surface map.
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What are isobars?
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They connect areas of equal pressure on a surface map.
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What is necessary for clouds to form?
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Clouds form when there is a condensation nuclei, and when air rises, cools, and condenses.
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Condensation Nuclei
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solid particles in the atmosphere, such as ice and dust, that provide the surfaces for clouds to form
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Station Model
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shows weather conditions at a specific location, using a combination of symbols on a map
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Describe the weather that precedes a warm front.
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The previously clear/sunny skies become cloudy. Cirrus clouds begin to roll in, followed by cumulus and then status clouds.
