Page 85 - EVS-2

air. The layer of air that is found around the Earth is called the atmosphere. A

model of the Earth is called a globe.

Surface of Land

The surface of the Earth has two parts : the land and the water. About two-third

of the Earth is covered with water and one-third part is land. The Earth is

surrounded by the air. The air has oxygen which we breathe in. It covers the Earth

like a blanket. This is what we call atmosphere.

Land, water and air are necessary for life on the Earth. The surface of the land is

not the same everywhere. It is low at some places and high at other places.

Plains : Plains are flat low level land. Most people

live and grow crops on the plains.

Hills : Hills are the land which are very high. Hills

have usually cold climate. When it is very hot in

plains during summer, we go to the hills to get relief
from heat. Hill

Mountains : Mountains are very high hills. The upper

parts of the mountains are covered with snow. In
summer, the snow melts and forms rivers. Mount

Everest is the highest mountain peak in the world.

Mountain

Plateau : Plateaus are flat areas at a height. They

are formed from broken old mountains.

Desert : Parts of the Earth covered with sand and

having almost no vegetation, are called deserts.

Sand storms are common in deserts. Desert

Man Has Brought Changes

Man has brought many changes on the Earth. He has built buildings, factories,

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