Question

Write a brief note on rock cycle. 5 marks​

Answer 1

Answer:

The rock cycle is a geological process that is undergone by the three main rock types: igneous, metamorphic and sedimentary. This process involves transitions between the three types of rock through erosion into sediment and cementing, or heating and pressure. Igneous rock can become sedimentary rock.

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Answer 2

The Rock Cycle :-

The rock cycle is a series of processes that create and transform the types of rocks in Earth’s crust.

There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle.

• Sedimentary rocks are formed from pieces of other existing rock or organic material. There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock. Organic sedimentary rocks, like coal, form from hard, biological materials like plants, shells, and bones that are compressed into rock.Chemical sedimentary rocks, like limestone, halite, and flint, form from chemical precipitation.

• Metamorphic rocks are rocks that have been changed from their original form by immense heat or pressure. Metamorphic rocks have two classes: foliated and nonfoliated.When a rock with flat or elongated minerals is put under immense pressure, the minerals line up in layers, creating foliation.Nonfoliated rocks are formed the same way, but they do not contain the minerals that tend to line up under pressure and thus do not have the layered appearance of foliated rocks

• Igneous rocks (derived from the Latin word for fire) are formed when molten hot material cools and solidifies. Igneous rocks can also be made a couple of different ways. When they are formed inside of the earth, they are called intrusive, or plutonic, igneous rocks. If they are formed outside or on top of Earth’s crust, they are called extrusive, or volcanic, igneous rocks.

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