Atmosphere
Atmosphere
The atmosphere is a layer of gas surrounding the earth and it forms a protective boundary between earth and space. This provides conditions that are suitable for life. The atmosphere protects earth from the meteors and high energy radiation. The atmosphere provides gases for life such as carbon dioxide for plants and oxygen for us.
Earths atmosphere is a mixture of nitrogen, oxygen, water vapor, and many other gases, in which tiny solids and liquid particles are suspended. 78% of the gas in the atmosphere is Nitrogen, 21% is oxygen, and the last 1% is made from other gases.
In the atmosphere, there are pressures made from compressed air by the gravity, which is the Air pressure. Air pressure is the force exerted by the weight of a column of air on a surface. The air pressure is the densest in the surface of the earth and as altitude increases, air pressure and density decreases. The total mass of atmosphere is below the altitude of 5.6km . Air pressure is measured with an instruments called barometer.
The atmosphere is a layer of gas surrounding the earth and it forms a protective boundary between earth and space. This provides conditions that are suitable for life. The atmosphere protects earth from the meteors and high energy radiation. The atmosphere provides gases for life such as carbon dioxide for plants and oxygen for us.
Earths atmosphere is a mixture of nitrogen, oxygen, water vapor, and many other gases, in which tiny solids and liquid particles are suspended. 78% of the gas in the atmosphere is Nitrogen, 21% is oxygen, and the last 1% is made from other gases.
In the atmosphere, there are pressures made from compressed air by the gravity, which is the Air pressure. Air pressure is the force exerted by the weight of a column of air on a surface. The air pressure is the densest in the surface of the earth and as altitude increases, air pressure and density decreases. The total mass of atmosphere is below the altitude of 5.6km . Air pressure is measured with an instruments called barometer.
Troposphere
The troposphere is the lowest layer of earth's atmosphere. Most weathers take place in the troposphere. Weather is the condition of the atmosphere in a particular place and time. Height is about 9-16km and average of 12km. Temperature generally decreases when altitude increases. Stratosphere Above the troposphere there is the stratosphere. The stratosphere extends from altitude of 12-50km. Temperature remains the same. The upper stratosphere is warmer than the lower stratosphere because of the ozone layer. ozone layer is a region of high ozone concentration composed of oxygen atoms. The Ozone layer absorbs and filters the UV radiation before it hit the earth's surface. Since it absorbs the UV the upper atmosphere is warm. Mesosphere Above the stratosphere there is the mesosphere. mesosphere begins at an altitude of 50-80km. temperature decreases as altitude increases. The air is very thin. Thermosphere The outermost layer of the atmosphere is the thermosphere. The thermosphere starts from 80km to outer space which indicates the end of atmosphere. The temperature rapidly increases from -90c to 1000c. The temperature is high because the molecule absorbs solar radiation and moves very fast. Ionosphere Ionosphere is a region of charged particles or ions, that overlaps the lower thermosphere. In the ionosphere the molecules of nitrogen and oxygen lose an electron as they absorb solar radiation. The molecules become positively charged which causes radio waves to bounce off to earth which enables the AM radio wave to travel further. Aurora is also caused by the ions. |