Layers of the Atmosphere

Front

What is the troposphere?

Back

The lowest layer of Earth's atmosphere where weather occurs and life exists, extending from the surface up to about 8-15 kilometers.

Front

What is the stratosphere?

Back

The second layer of the atmosphere, located above the troposphere, extending from about 15 to 50 kilometers, characterized by a temperature increase with altitude and containing the ozone layer.

Front

What is the mesosphere?

Back

The third layer of the atmosphere, extending from about 50 to 85 kilometers, where temperatures decrease with altitude and meteors burn up upon entering this layer.

Front

What is the thermosphere?

Back

The fourth layer of the atmosphere, extending from about 85 to 600 kilometers, characterized by very high temperatures and the presence of ionized gases.

Front

What is the exosphere?

Back

The outermost layer of the atmosphere, gradually fading into space, starting around 600 kilometers above the Earth.

Front

What is the ozone layer?

Back

A region within the stratosphere that contains a high concentration of ozone (O3) molecules, which absorb most of the Sun's harmful ultraviolet radiation.

Front

What is the significance of the troposphere for aviation?

Back

Most aviation occurs in the troposphere due to its relatively stable weather conditions and sufficient oxygen for aircraft engines.

Front

How does temperature change in the troposphere?

Back

In the troposphere, temperature generally decreases with altitude, averaging about 6.5 degrees Celsius per kilometer.

Front

What happens to air pressure as you ascend through the atmosphere?

Back

Air pressure decreases with altitude; as you go higher, there is less air above you, resulting in lower pressure.

Front

What is the role of the mesosphere in protecting Earth?

Back

The mesosphere protects Earth by burning up meteors that enter the atmosphere, preventing them from reaching the surface.