7.3.1;Naun Flashcards

1
Q

Atmosphere

A

the envelope of gases surrounding the earth or another planet

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2
Q

Altitude

A

the height of an object or point in relation to sea level or ground level

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3
Q

Density

A

he degree of compactness of a substance

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4
Q

Troposphere

A

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

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5
Q

Stratosphere

A

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).

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6
Q

Mesosphere

A

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.

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7
Q

Thermosphere

A

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.

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8
Q

Exosphere

A

the outermost region of a planet’s atmosphere.

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9
Q

Temperature

A

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.

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10
Q

Nitrogen

A

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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11
Q

Carbon

A

the chemical element of atomic number 6, a nonmetal which has two main forms (diamond and graphite) and which also occurs in impure form in charcoal, soot, and coal.

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12
Q

Dioxide

A

.
the chemical element of atomic number 6, a nonmetal which has two main forms (diamond and graphite) and which also occurs in impure form in charcoal, soot, and coal.

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13
Q

Oxygen

A

a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.

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14
Q

altitude

A

the height of an object or point in relation to sea level or ground level.

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15
Q

air pressure

A

he force exerted on a surface by the air above it as gravity pulls it to Earth

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16
Q

concentration

A

the action or power of focusing one’s attention or mental effort

17
Q

condition

A

the state of something with regard to its appearance, quality, or working order.