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23 Cards in this Set
- Front
- Back
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How is the atmosphere divided?
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into layers according to temperature
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What does air pressure do?
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it pushes down at abou 14.5 psi
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What are the layers in the atmosphere from lowest to highest?
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Troposphere, stratosphere, mestsphere, thermosphere, exosphere
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Where does most weather take place?
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Troposphere
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What is the troposphere?
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lowest level of atmosphere, contains 75% of gases in atmosphere, high goes up so does temperature, most dense layer, constantly in motion, holds jetstream
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What is the stratosphere?
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second layer, temp remains failry constant (cold!) contains the ozone that absorbs UV radiation (causes the temp to increase in the upper part of the layer)
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What is the mesosphere?
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third layer up, after stratosphere, temp drops to -100oC, coldest region, protects from meteroids
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What is the thermosphere?
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Layer above the mesosphere, thin air temperature is very high in this layer, UV radiation is turned into heat
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What is the exosphere?
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Highest part of atmosphere, air very thin, sattelites are here, day HOT, night COLD, energy=heat
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What is the magnetosphere?
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Area that extends beyond the atmosphere, earth's magnetic field, made of protons and electrons, traps particles from the sun
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What are the aurora borealis?
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when large amounts of radiation is given off during a solar flare, the particles collide and cause the lights
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What would happen if there were no atmosphere?
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it would be COLDER because there is nothing to insulate
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Why does the air seem thinner at high altitudes?
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there is less atmosphere and so there is less pressure
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How much pressure does the atmosphere push down with?
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14 psi, about 1 ton a day
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What is found in the atmosphere?
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nitrogen, oxygen, argon, and trace gases (water vapor, CO2, ozone)
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The pressure is at high temperatures.
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lower
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pressure is at lower temperatures?
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higher
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Why is it colder at higher altitudes?
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less air (insulation) above
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What is meterology?
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the study of weather
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What is weather?
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condition of atmosphere at a particular time and place
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What is climate?
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Overall weather of an area over many years
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What is meterology the study of?
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temperature, air pressure, direction and speed of wind, humidity, kind and amount of precipitation, condition of the sky
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What does a thermometer do?
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measures temperature of air
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