Download 6th Class Geography Notes (Unit-4) for Islamabad Model Schools / Colleges


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SHORT QUESTIONS

What type of rock is coal?
Coal is sedimentary rock.
How was Coal formed?
·        Coal is formed through chemical changes in the organic materials.
·        The chemical changes have occurred over millions of years.
·        The layers were laid in deep or shallow waters.
Three types of rocks are given. Arrange them in 3 lots. Shale, Slate, Coal, Lava, Marble, Basalt, Salt, Sandstone, Volcanic Ash.
Igneous Rocks:
Lava, Basalt, Volcanic Ash
Sedimentary Rocks:
Shale, Coal, Salt, Sandstone,
Metamorphic Rocks:
Slate, Marble

LONG QUESTIONS


What are the Igneous Rocks? Give two ways of their formation.
Igneous Rocks are formed from hot melted material of the deep inner parts of the earth.
Ways of Formation:
·        When hot melted magma is stuck up in inner cracks and starts cooling down. Thus a rock is formed beneath the surface called Intrusive Rocks.
·        Many times magma the hot molten material of the interior, forces its way out through the cracks and cools down to form extrusive rocks.
How Sedimentary Rocks are formed?
·        A rock consisting materials of earlier existing rocks is called Sedimentary Rock.
·        Such rocks are formed as their matter has been laid down in layers.
·        Such layers are called strata.
Give characteristics of 3 major types of rocks.
Igneous Rocks:
·        Igneous Rocks are formed from hot melted material of the deep inner parts of the earth.
·        When hot melted magma is stuck up in inner cracks and starts cooling down. Thus a rock is formed beneath the surface called Intrusive Rocks.
·        Many times magma the hot molten material of the interior, forces its way out through the cracks and cools down to form extrusive rocks.
·        For Example Lava, Basalt, Volcanic Ash.
Sedimentary Rocks:
·        A rock consisting materials of earlier existing rocks is called Sedimentary Rock.
·        Such rocks are formed as their matter has been laid down in layers.
·        Such layers are called strata.
·        For example Shale, Coal, Salt, Sandstone,
Metamorphic Rocks:
·        Metamorphic Rocks come from changes in igneous or sedimentary rocks due to intense heat and pressure.

·        For example Slate, Marble

Geography Notes for 6th Class / VI for all Islamabad Model Schools & Colleges

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Download Class Notes: Download 6th Class Geography Notes (Unit-4) for Islamabad Model Schools / Colleges
Download 6th Class Geography Notes (Unit-4) for Islamabad Model Schools / Colleges
Download 6th Class Geography Notes (Unit-4) for Islamabad Model Schools / Colleges
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