Atmospheric Layers Quiz

Study Notes

Atmospheric Layers

The troposphere is the lowest and most important layer, containing nearly 80% of the atmosphere's mass. It's where most weather occurs.
Water vapor and clouds are concentrated in the troposphere, leading to precipitation.
Temperature decreases with increasing altitude in the troposphere.
The tropopause marks the boundary of the troposphere, where temperature stops decreasing.

Stratosphere

The stratosphere extends from the tropopause to 50 km altitude.
Temperature remains fairly constant up to 32 km, then gradually increases.
The increase is due to ozone layer absorbing UV radiation and converting it to heat.
The stratosphere is characterized by dry air and lack of clouds, and often experiences strong horizontal winds.
The stratopause marks the upper boundary of the stratosphere.

Mesosphere

The mesosphere sits between 50 and 80 km above Earth's surface.
Temperature stops increasing and starts decreasing in this layer.

Thermosphere

Above the mesosphere, the thermosphere extends from about 80 km to 600 km.
Temperatures rise significantly in the thermosphere, reaching as high as 1,100°C due to UV absorption.
A final reversal in temperature occurs in the thermosphere.

Exosphere

The exosphere extends from about 600 km to 800 km, having an elliptical shape as it merges with space.

Wind Systems

Air pressure is created by uneven heating of Earth's surface.
Warm air rises, creating low-pressure areas; cool air sinks, creating high-pressure areas.
This vertical movement of air is called convection.
Differences in pressure are equalized by horizontal movement of air, which is wind.
Wind speed and direction is characteristic of wind.

Description

Test your knowledge on the different layers of the atmosphere, including the troposphere, stratosphere, and mesosphere. This quiz covers key characteristics, temperature changes, and the importance of each layer. Perfect for students studying earth sciences.