Question

(iv) How are extrusive and intrusive rocks formed?
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Answer 1

Explanation:

Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.

Answer 2

Extrusive rocks formed when the molten lava comes on the earths surface, it rapidly cools down and becomes solid.

Intrusive rocks formed when the molten magma cool down deep inside the earths crust and solid rocks are formed.

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