7.3.1/ khayla Flashcards
Atmosphere
Defenition : An atmosphere is the layers of gases surrounding a planet or other celestial body
Altitude
definition :
The height of an object or point in relation to sea level or ground level
Density
Definition :
the degree of compactness of a substance
Troposphere
Definition : Closest to the surface of Earth, we have the troposphere. “Tropos” means change. This layer gets its name from the weather that is constantly changing and mixing up the gases in this part of our atmosphere.
Stratosphere
Definition : the part of the earth’s atmosphere which extends from the top of the troposphere to about 30 miles (50 kilometers) above the surface and in which temperature increases gradually to about 32° F (0° C) and clouds rarely form
Mesosphere
definition : The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere
Thermosphere
Definition : The thermosphere is the layer in the Earth’s atmosphere directly above the mesosphere and below the exosphere.
Exosphere
Definition : The exosphere is a thin, atmosphere-like volume surrounding a planet or natural satellite where molecules are gravitationally bound to that body, but where the density is so low that the molecules are essentially collisionless
Temperature
Definition :Temperature is a physical quantity that expresses the hotness of matter or radiation.
Nitrogen
Definition : 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 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.
air pressure
Air pressure definition, the force exerted by air, whether compressed or unconfined, on any surface in contact with it.
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.