7.3.1-Jordan Flashcards
Atmosphere
the whole mass of air that surrounds the earth
Altitude
the height of an object or point in relation to sea level or ground level.
Density
the degree of compactness of a substance
Troposphere
the lowest region of the atmosphere, extending from the earth’s surface to a height of about 3.7–6.2
Stratosphere
the layer of the earth’s atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth’s surface (the lower boundary of the mesosphere).
Mesosphere
the region of the earth’s atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.
Thermosphere
the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.
Exosphere
the outermost region of a planet’s atmosphere.
Temperature
the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
Nitrogen
the chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth’s atmosphere. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.
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Carbon Dioxide
a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
Oxygen
a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
Altitude
the height of an object or point in relation to sea level or ground level.
Density
the degree of compactness of a substance.
Air pressure,
the weight of the air.