Q) What is the lower most layer of the soil?

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Q) What is the upper most layer of the soil?

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Q) Which type of rock formed when small particles of sand get compressed and cemented together?
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Q) What is the layer of sand, organic matter and minerals on the surface of the earth?
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Q) Which power plants use Uranium to produce nuclear energy?
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Q) The magma that reaches the surface of the earth is called?
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Q) Which is used as a scrubbing stone to remove rough dead skin from the body?
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Q) Sand stone is widely used for making?
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Q) Atomic power plants use Uranium to produce?
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Q) Lower most layer of the soil is called?
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Q) Explain the types of Rocks.
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Q) What is the Igneous Rock?
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Q) What is Sedimentary Rock?
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Q) What is extraction of matter?
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Q) Explain the uses of rocks and minerals?
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Q) Explain briefly about soil profile?
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Q) Explain briefly about Composition of soil?
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Q) Explain briefly about Fuels from Rocks and Minerals?
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Q) Explain briefly about Metamorphic?
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Q) Explain briefly about Rocks,Minerals and soil?
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Q) Explain briefly about the fuels from Rocks and minerals.
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Q) Explain about the formation of soil.
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Q) Explain briefly about the types of rocks.
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Q) Explain about Igneous and Sedimentary rocks with examples.
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Q) Explain about Igneous and metamorphic rocks with examples.
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Q) Explain in detail about Composition of soil?
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Q) Explain in detail about Soil Profile?
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Q) Explain in detail about Types of Metamorphic Rock?
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Q) Explain in detail about Uses of rocks and minerals?
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Q) Explain in detail about Types of Sedimentary Rocks?
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- Different types of rocks.
- Minerals and their uses.
- Soil and its composition.


Types of igneous rocks depends on how lava cools down.
Different igneous rocks have different minerals and colours.
Basalt:- |
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Granite:- |
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Pumice:- |
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Types of Sedimentary Rocks:-
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Metamorphic means - has changed.

Types of Metamorphic Rock
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Uses of rocks and minerals:-
- Different metals are extracted or mined from minerals.
- A mineral from which metal can be extracted is called an ore.
- Iron, aluminium, copper and zinc from haematite, bauxite, copper pyrites and calamine respectively.
- Used to make utensils, machines, furniture, wires ...etc
- Precious metals like gold and silver are used for making jewellery.

Coal, Petrol, Diesel, Kerosene, LPG, CNG etc are fuels used daily.
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- Minerals are very hard and found in the form of crystals.
- Cut and polished into beautiful stones called gemstones.
- Diamonds, rubies, emeralds and sapphires are some gemstones used in making jewellery.
- Soil is the upper most layer of the earth.
- Plants grow in soil. Plants produce food and help to maintain oxygen level in the air.
- Soil is the layer of sand, organic matter and minerals on the surface of the earth with some amount of water and air.
- i.e Soil = sand + organic matter + minerals + water + air.


- Soil is made up of gravel + sand + clay + moisture(water)+ Humus.
- Soil also contains air + Minerals + bacteria and fungi.
- Layers of soil is called soil profile.
- Three layers.
- Upper most layer of the soil is called top soil.
- Middle of the soil is called sub soil.
- Lower most layer of the soil is called bed rock.
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