List the four most abundant gases in today's atmo-sphere. Nitrogen, oxygen, and argon are the three most permanent while water and carbon dioxide are two most abundant variable gases. Water vapor 6. The atmosphere absorbs most of the harmful uv radiation from the sun. The ozone layer in the stratosphere is primarily responsible for this.
Air is made of molecules which have mass and therefore weight.
At the surface an object has the full column of air above pushing down on its surfaces. 29.92 inches of mercury or 1013.25 millibars. Briefly describe how the air temperature changes from the earth's surface to the lower thermosphere. There is a constant slope of diminishing temperature in the troposphere followed by an increase in the stratosphere. This in turn is followed by a decrease in the mesosphere and finally an increase in the thermosphere.