Poojavadavelli

What Is Atmosphere???             Atmosphere is a Envelope of gases surrounding the Earth. Importance of Atmosphere: The atmosphere is a mixture of nitrogen (78%), oxygen (21%), and other gases (1%) that surrounds Earth. High above the planet, the atmosphere becomes thinner until it gradually reaches space. The atmosphere is an important part of what makes Earth livable. It blocks some of the Sun’s dangerous rays from reaching Earth. It traps heat, making Earth a comfortable temperature. And the oxygen within our atmosphere is essential for life. Layers of Atmosphere: The troposphere is the first layer above the surface and contains half of the Earth’s atmosphere. Weather occurs in this layer. Many jet aircraft fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun. Meteors or rock fragments burn up in the mesosphere. The thermosphere is a layer with auroras. It is also ...