The Earth’s crust is made up of various types of rocks, and the scientific study of rocks is called petrology.
These rocks differ in ;
According to origin and appearance rocks can be divided into three groups –
You can remember it by word ignite, which means to burn. So, igneous rocks are formed after cooling and solidifying molten rock (magma) from beneath the Earth’s crust.
Classification of Igneous rocks based on origin
Depending upon the mode of formation, sedimentary rocks are classified into:
Some examples of Metamorphosis
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1. What is the rock system? |
2. What is the rock cycle? |
3. How are igneous rocks formed in the rock system? |
4. What are some examples of sedimentary rocks in the rock system? |
5. How do metamorphic rocks form in the rock system? |
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