Write an essay on Atmosphere with full explanation 100 to 150 words!!
Answers
Answer:The atmosphere is a turbulent gaseous blanket that surrounds the earth. The mass of this surrounding atmosphere is less than a millionth part of that of the whole earth, yet its activities and influences are far-reaching. On the average each person breaths 15 kg of air per day. The presence of the atmosphere is necessary to sustain all the types of life of the earth.
It is the atmosphere that plays its role tending to equalize the temperature of the earth’s surface. By its agency weather is produced which causes rock weathering. Weather is of vital importance in the execution of engineering projects. Many construction works have been delayed due to adverse weather conditions.
Many construction activities can be carried out only in certain seasons or in favourable weather. The atmosphere plays its role as a medium for transfer of water, since water continuously is evaporated into the atmosphere and later precipitated on to the earth in the form of rain or snow which is gathered into the streams and glaciers, and assists in wearing the rocks and transport the sediments to the sea. Engineering attention is well focused on winds on instances of damage or failure of bridges and buildings.
The atmosphere is an important geological agent. The atmosphere chemically reacts with the rocks oxidizing them to form new minerals. It generally breaks the rocks into smaller fragments leading to disintegration.
The atmosphere acts as a thermal blanket which not only distributes the heat received from the sun but also tends to prevent the escape of heat from the earth. Sunlight is subjected to diffusion by the gaseous molecules and the suspended dust particles.Moreover the gaseous envelope surrounding the earth protects the earth from excessive ultra violet radiation and from violent bombardment by meteorites. It may be realized that millions of meteorites fall into the atmosphere of the earth every day but they all get disintegrated by severe heat caused by friction.
The disintegrated fragments settle on the earth’s surface as fine cosmic dust. In exceptional instances some large meteorites may pass through the atmosphere and drop on the earth and may penetrate into the ground for a few metres.
By the daily weather at a place we mean the temporary state of prevailing atmospheric conditions like temperature, air pressure, wind humidity, cloudiness and precipitation. Climate is the combined effect of weather over a long period of time. Soils and vegetation in a region are to a great extent determined by the climate of the region. The geological processes especially the weathering of rocks and minerals and land erosion are all influenced by climate.
Explanation:
Answer:
The atmosphere (from Ancient Greek ἀτμός (atmos), meaning 'vapour', and σφαῖρα (sphaira), meaning 'ball' or 'sphere') is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low. The atmosphere is a significant component of the biospheric ecosystem because the life on the earth’s surface is because of this atmosphere otherwise the earth would have become barren like moon.
The atmosphere of Earth is composed of nitrogen (about 78%), oxygen (about 21%), argon (about 0.9%), carbon dioxide (0.04%) and other gases in trace amounts.[3] Oxygen is used by most organisms for respiration; nitrogen is fixed by bacteria and lightning to produce ammonia used in the construction of nucleotides and amino acids; and carbon dioxide is used by plants, algae and cyanobacteria for photosynthesis.
The atmosphere acts as a thermal blanket which not only distributes the heat received from the sun but also tends to prevent the escape of heat from the earth. Sunlight is subjected to diffusion by the gaseous molecules and the suspended dust particles.
Many construction activities can be carried out only in certain seasons or in favourable weather. The atmosphere plays its role as a medium for transfer of water, since water continuously is evaporated into the atmosphere and later precipitated on to the earth in the form of rain or snow which is gathered into the streams and glaciers, and assists in wearing the rocks and transport the sediments to the sea.
By the daily weather at a place we mean the temporary state of prevailing atmospheric conditions like temperature, air pressure, wind humidity, cloudiness and precipitation. Climate is the combined effect of weather over a long period of time. Soils and vegetation in a region are to a great extent determined by the climate of the region. The geological processes especially the weathering of rocks and minerals and land erosion are all influenced by climate.
Be sure to click a thanks...