Composition and Structure of the Atmosphere

1. What is composition and structure of the atmosphere?

The atmosphere of earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), carbon dioxide (0.04%) and trace gases.. Together, the two major gases nitrogen and oxygen make up 99% of the atmosphere. The troposphere, stratosphere, mesosphere, ionosphere, and exosphere make up the atmosphere.

2. Why is the composition of the atmosphere important?

The significance of atmospheric composition is the absorption of some sun irradiation and its return to the Earth’s surface so as to increase temperature. The greenhouse effect is what is known as this, and it causes global warming.

3. What is the main function of atmosphere?

The atmosphere protects life on earth by shielding it from incoming ultraviolet (UV) radiation, keeping the planet warm through insulation, and controllingextremes between day and night temperatures. The convection that results from the sun’s heating of the atmosphere’s layers is what drives global air currents and weather patterns.

4. What are the four major components of the atmosphere?

Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meagre amounts. Air is the term used to describe the complex gas combination that constitutes the Earth’s atmosphere.

5. Which atmosphere is the coldest?

The coldest layer of atmosphere is the mesosphere while the hottest layer of the atmosphere is thermosphere.

Composition and Structure of the Atmosphere: The atmosphere of the Earth is composed of Nitrogen (78%), Oxygen (21%), Argon (0.9%), Carbon dioxide (0.04%), and flicker gases. A varying amount of water vapor is also present in the atmosphere which is approximately 0.1% at sea level. The two important gases in the atmospheric composition are nitrogen and oxygen. About 99 percent of it is made up of these two gases. A few other gases that are still present in the our Earth’s atmosphere are argon, carbon dioxide, neon, helium, and hydrogen. In the upper atmosphere, the ratio of gases varies to the extent that oxygen is nearly nonexistent at 120 km altitude.

Let’s understand the Composition and Structure of the Earth’s Atmosphere.