7.3.1- Josalynn Flashcards
atmosphere
the envelope of gases surrounding the earth or another planet
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 miles (6–10 km), which is the lower boundary of the stratosphere.
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).
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
when its hot or cold.
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.
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.
air pressure
It is the force exerted on a surface by the air above it as gravity pulls it to Earth
concentration
the action or power of focusing one’s attention or mental effort
condition
the state of something with regard to its appearance, quality, or working order
constant
occurring continuously over a period of time
