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00:00NATURAL ENVIRONMENT
00:04Our solar system consists of the sun and eight planets.
00:12The sun is a star at the center of our solar system.
00:18The earth and the other planets move around the sun.
00:26Three quarters of the earth's surface is covered by water.
00:32Wake up! It is day.
00:36Did you sleep well?
00:38Do you know that you went for a ride?
00:41No?
00:42Well, the earth is in a constant state of movement.
00:47It keeps moving slowly around the sun.
00:51As you are on the earth, you too are moving with it.
00:58The sun gives heat and light to the turning earth.
01:03The natural things on the surface of the earth are mountains, hills, valleys, deserts, soils, rocks, rivers, lakes, seas and oceans.
01:23A mountain or hill is a piece of land.
01:30It rises up above the land around it.
01:35A hill is smaller than a mountain.
01:39A valley is a narrow piece of land between two hills.
01:45Sometimes there is a river flowing through the valley.
01:49A desert is a dry land made up of sand.
01:54Soil is made up of tiny bits of rock.
01:58Rocks are of many shapes, sizes and colors.
02:03Marble, slate and granite are some of the rocks.
02:09Iron is found in the earth.
02:12It is mixed with other metals to get steel.
02:17I am made from iron.
02:20We are all made from steel.
02:25We are precious stones and metals.
02:28We shine, we flash, we sparkle.
02:33You get us all from the earth.