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Front

Atmosphere

Back

A layer of gases surrounding a planet or other material body, held in place by the gravity of the body.

Front

Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere.

Back

What are the major layers of the atmosphere?

Front

6.5°C per 1,000 m (3.6°F per 1,000 ft.) of altitude.

Back

What is the temperature gradient of the troposphere?

Front

Earth's surface, primarily from the Sun.

Back

What is the primary source of heat for the troposphere?

Front

Warm air rises and cool air sinks, causing mixing.

Back

What happens to warm air in the troposphere?

Front

Temperature inversion

Back

A condition where air temperature increases with altitude, trapping cooler air below.

Front

ozone layer

Back

It absorbs most of the Sun's harmful ultraviolet (UV) radiation, protecting life on Earth.

Front

Temperatures decrease with altitude, reaching about -90°C (-130°F) at the top.

Back

What is the temperature in the mesosphere?

Front

ionosphere

Back

A region within the thermosphere where solar radiation ionizes gas molecules, creating charged particles.

Front

contrails

Back

White streaks formed by water vapor condensing and freezing around particles in aircraft exhaust.