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WELCOME BOSMI C T SOCIAL SCIENCE 16914303009

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WELCOME

BOSMI C T SOCIAL

SCIENCE 16914303009

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UNIT 2 THE EARTH WHICH SUPPORT MAN

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VOLCANOES Volcanoes are caused when molten

rocks flows out to the earth surface through fissures that are caused due to the movement of plates.

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Volcanic Mountain

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Volcanic Eruption Some volcanoes erupt the lava

out with a great explosion and some others, silently.

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TYPES OF VOLCANOES Based on the chances of eruption the

volcanoes are classified in to three. 1.Active 2.Exinct 3.Dormant

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1. ACTIVE VOLCANOES Those that frequently erupt. example: Mount Etna in Italy.

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2.EXTINCT VOLCANOES Active at a time.But will not erupt

again. example: Kilimanjaro in Africa.

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3.DORMANT VOLCANOES Those that have erupted earlier

and not active in the recent past. But can become active.

example: Vesuvius in Italy.

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MOUNTAINS An uplifted portion of the earths

surface is called a Hill or Mountains.

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VARIOUS MOUNTAINS Mountains are divided into four on the

basis of their origin. 1.Fold mountains. 2.Block mountains. 3.Relict mountains. 4.Volcanic mountains.

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1.Fold Mountains Forms as a result of the faulting on the

rocks. example: Himalayas, Alps

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2.Block Mountain Forms as a result of the

faulting on the rocks. Example: Black Forest.

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3.Relict Mountain Long term wealth oring on the old

mountain. example: Aravally.

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4.Volcanic Mountain

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Mount Abu

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EROSION

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RUNNING WATER

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‘V’ SHAPED VALLEY

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WATER FALL

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FLOOD PLAIN

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MEANDERS

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DELTA

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THANK YOU