1. Answer the following questions.
(i) What are the three layers of the earth?
(i) What is a rock?
(iii) Name three types of rocks.
(iv) How are extrusive and intrusive rocks formed?
(v) What do you mean by a rock cycle?
(vi) What are the uses of rocks?
(vii) What are metamorphic rocks?
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Answer:
Three layers of the earth are
- crust
- Mantle
- Core
- rock is a solid matter
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