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25 Cards in this Set
- Front
- Back
troposphere
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the layer of the atmosphere that is closest to the surface of the Earth. Most of our weather happens in the troposphere
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stratosphere
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layer above the troposphere. Cold, low-pressured area.
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ozone layer
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Warm, upper level of the stratosphere. This layer absorbs much of the sun's ultraviolet radiation.
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mesosphere
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coldest layer of the atmosphere, between the stratosphere and troposphere.
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ionosphere
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area of the atmosphere where ions form. Without the ionosphere, most radio waves would travel directly into space.
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auroras
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colorful light display in the sky. They are formed with ions from the sun his atoms and molecules in the ionosphere.
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photosynthesis
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A method of capturing energy from the sun. Produces oxygen as a by-product.
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aerobic
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oxygen breathing organism
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anaerobic
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not needing oxygen
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chlorofluorocarbons (CFCs)
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chemicals that are causing the ozone layer to thin
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Greenhouse effect
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Warming of the surface and lower atmosphere of Earth that occurs when carbon dioxide, water vapor, other gases in the air absorb and reradiate infrared radiation.
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Global warming
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It too much energy is absorbed by the atmosphere, global temperature will rise.
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Water cycle
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Water is continuously being moved through the troposphere.
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Evaporation
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Liquid to gas
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Transportation
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Plants lose moisture through small pores in their leaves. The moisture goes into the air.
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Precipitation
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Water vapor cools enough to become clouds then falls as rain.
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Humidity
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Amount of moisture in the air
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Condensation
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Water changing from gas to a liquid. ( on the mirror when you take a shower)
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Dew point
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Temperature at which the rate of condensation equals the rate of evaporation.
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Cirrus clouds
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Thin, wispy. Occur at high levels.
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Stratus clouds
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Layered and look like sheets. Occur at lower levels.
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Cumulus clouds
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White, fluffy, flat bottom. Flat bottom is where rising air reaches dew point.
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Barometric pressure
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Pressure that results. From the weight of a column of air extending from the top of the thermosphere to the point of measurement.
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Wind
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A difference in pressure creates winds.
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Coriolis effect
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The effect of Earth's on the direction of wind.
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