It is a thick layer of odourless, colourless and tasteless gases held to the earth by the force of gravity. The transfer of heat through the molecules of matter in any body is called conduction.
Above it a fall in temperature is recorded. Energy Balance in Atmosphere: This mechanism known as greenhouse effect keeps Layers of the atmosphere essay lower atmosphere and the ground surface relatively warmer. Transfer of heat of atmosphere from one place to another is known as convection.
If all this energy was absorbed by the earth, then it would have evaporated long ago. Thus, the terrestrial radiation is the most important source of heating of the atmosphere.
Scientists divided the atmosphere into four layers according to temperature: It may be pointed out that carbon dioxide also absorbs long-wave terrestrial radiation and helps in keeping the lower atmosphere and the ground surface warmer.
Moen has found that white-tailed deer seems to respond to unidentified factors, with an increase in nervousness, activity and heart rate.
The process helps increase surface temperature of the earth. The whole mechanism of ascent of warmer air and descent of colder air generates convection currents in the lower atmosphere.
The lower portion has a nearly constant temperature with height but in the upper portion the temperature increases with altitude because of absorption of sunlight by ozone. There are various factors responsible for heating of the earth. The stratosphere exhibits several significant differences from the troposphere.
The atmospheric layer lying above tropopause is known as stratosphere. Deforestation, soil erosion, etc. The troposphere contains about three-fourths of the total mass of the atmosphere, thus it is the densest of all layers.
The carbon dioxide allows incoming solar radiation to enter into the earth surface but it absorbs the terrestrial radiation and sends back to the earth.
Since it is nearer to the sun, its temperature is very high. An important feature of the mesosphere is its higher temperature in winter compared with summer, which is apparently due to a small ozone content.
Water vapour and carbon dioxide in the troposphere trap some of this heat, preventing it from escaping thus keep the Earth warm. It is obvious that heat moves from warmer body to the cooler body through molecular movement.
The atmosphere absorbs 14 per cent of incoming short wave solar radiation through ozone, water vapour etc.
This convective mechanism transports heat from the ground surface to the atmosphere and thus helps in the heating of the lower atmosphere. According to Barry and Chorleythe major components mainly contain nitrogen, oxygen and water vapours, the minor components contain argon and carbon dioxide, and trace components contain gases like neon, helium, methane, krypton, nitrous oxide, hydrogen, xenon, sulphur dioxide, ozone, ammonia, carbon monoxide, iodine etc.
When warm air reaches the tropopause, it cannot go higher as the air above it in the stratosphere is warmer and lighter … preventing much air convection beyond the tropopause. The human activities add methane and carbon dioxide to the atmosphere mainly through burning of fossil fuels and various agricultural activities.
The air coming in contact with the warmer ground surface is also heated because of transfer of heat conduction of heat from the ground surface through the molecules to the air. The upper strata is rich in ozone.
Due to certain chemical and physical properties of the elements of atmosphere, they absorb more heat from the terrestrial radiation rather than the radiation from the sun.
The process of transfer of heat from one body to the other body without the aid of a material medium e. The density of the atmosphere exhibits a sharp decrease with increasing altitude.
The tropopause acts like an invisible barrier and is the reason why most clouds form and weather phenomena occur within the troposphere. The troposphere is characterized by:The atmosphere is divided into four layers. The atmosphere also has a layer of ozone.
The layers of the atmosphere listed from lowest altitude to highest altitude are the troposphere, stratosphere, mesosphere and thermosphere. Essay on Amazing Atmosphere of the Earth Words | 3 Pages.
The Earth’s atmosphere is divided up into the Troposphere, Stratosphere, Mesosphere and the Thermosphere. The Earth’s ozone layer is located in the lower stratosphere, which begins about 6 to 10 miles above the Earth’s surface and expands up to about 30 miles. (iv) Atomic hydrogen layer is the topmost layer of the atmosphere and extends upto the outermost limit of the atmosphere.
Essay # 4. Structure of the Atmosphere. Here is your Essay on the Most Important Concentric Layers of the Atmosphere! There are five concentric layers within the atmosphere, which can be differentiated on the basis of temperature.
These include the troposphere, the stratosphere, the mesosphere, the heterosphere and the exosphere (Fig. 81), each of which has following physico-. Essay on Amazing Atmosphere of the Earth Words 3 Pages The Earth’s atmosphere is divided up into the Troposphere, Stratosphere, Mesosphere and the Thermosphere.
The rest is made up of small amounts of other gases. The atmosphere is divided into four layers. The atmosphere also has a layer of ozone. The layers of the atmosphere listed from lowest altitude to highest altitude are the troposphere, stratosphere, mesosphere and 4/5(4).Download