Question

C.
State whether the following statements are True or False.
1. The mantle extends upto a depth of 1100 km.
2. The oceanic crust is called SIAL.
3. Rocks undergo a cycle of transformation.
4. Rocks determine the soil type of any area and are useful for construction.​

Answer 1

Required Answer :

1. False
2. False
3. True
4. True

★Explanation :

• Mantle is below the crust which extends up to a depth of 2900 km below the crust .
• The oceanic crust consists of silica and magnesium,that is called SIMA (si as silica and ma as magnesium).
• Yes, because it's a natural phenomenon.
• The rocks helps the Geologist to study the soil of a particular place.

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Answer 2

Answer:

1False

2False

3True

4True

Explanation:

hope it helps u