Layers of the Atmosphere

The troposphere is the lowest layer of the atmosphere, where weather occurs and where most of the air pressure is found.

The stratosphere is the second layer of the atmosphere, located above the troposphere, and contains the ozone layer.

The mesosphere is the third layer of the atmosphere, located above the stratosphere, where temperatures decrease with altitude.

The thermosphere is the outermost layer of the atmosphere, characterized by high temperatures and low air pressure.

Air pressure is the force that air exerts on all objects, caused by the weight of the air above.

Nitrogen is the most abundant gas in the atmosphere, making up about 78% of the air.

1% of the atmosphere is made up of other gases such as argon, water vapor, and carbon dioxide.

The ozone layer is a region within the stratosphere that absorbs most of the sun's harmful ultraviolet radiation.

As you go higher in the troposphere, the temperature generally decreases.

The boundary between the troposphere and the stratosphere is called the tropopause.