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  • 3 Types of Rocks.

  • My Study.

  • About my study.

  • On the bases of their formation, rocks are broadly divided into three types, namely igneous rocks, sedimentary rocks and metamorphic rocks.

  • Igneous rocks.

  • Igneous rocks are found in volcanic regions.

  • Volcanic region.

  • This is an igneous rock.

  • Yes, it is.

  • You can find it over there.

  • Be careful, it is very hot.

  • Don't worry.

  • I have super bikes and protective suits.

  • Igneous rocks are formed from magma, which is a molten material found deep inside the earth.

  • This molten magma comes upwards or even erupts from a volcano in the form of lava.

  • When this lava cools, it leads to the formation of igneous rocks.

  • Igneous rocks.

  • Now i know about igneous rocks.

  • What is that?

  • Pumice and Granite.

  • These are also some types of igneous rocks.

  • What type of rock is this?

  • This is a sedimentary rock.

  • How does it form?

  • Don't worry.

  • I will show you.

  • Natural processes like wind, rain, flowing rivers carry soil particles, sand, dead plants.

  • Over time, sand, soil, dead plants, etc. get deposited on top of each other.

  • They are called layers of sediment.

  • Over time, these layers press over one another to form sedimentary rocks.

  • These rocks take thousands of years to form.

  • Have a look at these rocks.

  • Sandstone, coal and limestone.

  • These are some types of sedimentary rocks.

  • What type of rock is this?

  • This is a metamorphic rock.

  • Let me show you.

  • These are sedimentary rocks.

  • Heat from magma.

  • Pressure from upper layers.

  • Over a period of time.

  • Formation of metamorphic rocks.

  • Look at limestone.

  • It is sedimentary rock.

  • When limestone is subjected to pressure and heat.

  • It forms marble, a type of metamorphic rock.

  • Quartzite and slate.

  • These are also some types of metamorphic rocks.

  • Now, I know about the types of rocks.

  • Thank you for your great help.

  • The End.

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3 Types of Rocks.


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B2 中高級 美國腔

3種類型的岩石|#aumsum (3 Types of Rocks | #aumsum)

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    AumSum 發佈於 2021 年 01 月 14 日