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15 Cards in this Set
- Front
- Back
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What is a wind vane?
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A device used to find wind direction. Most wind vanes are shaped like a long arrow with a tail.
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What are low-pressure areas?
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Areas where pressure is lower than the surrounding air.
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What are high-pressure areas?
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Areas where pressure is higher than the surrounding air.
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What is a barometer?
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A device used to measure air pressure. Two kinds are a mercury and aneroid.
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What is air pressure
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The push of air against its surroundings.
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What is wind?
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The movement of air.
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What is the greenhouse effect?
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The process in which heat from Earth is trapped by the atmosphere.
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What is weather?
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It is the condition of the atmosphere at a certain place and time. It can change from day to day, from hour to hour and even minute to minute.
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What is the troposphere?
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The lowest layer of the atmosphere which supports life. It reaches about 11km above the Earth's surface.
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What is the atmosphere?
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A blanket of air, which is made up of gases, liquids, and some solid matter.
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What is air made up of?
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Matter
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What is air?
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It is matter and a mixture of gases.
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What is nitrogen?
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It is largely what air is composed of.
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What is oxygen?
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The second most plentiful gas in air.
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What other gases is air composed of?
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Carbon dioxide and water vapor
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