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प्रश्न
How are extrusive and intrusive rocks formed?
उत्तर
When the molten lava comes on the earth’s surface, it rapidly cools down and becomes solid. Rocks formed in this way on the crust are extrusive igneous rocks.
Sometimes the molten magma cools down deep inside the earth’s crust. Solid rocks so formed are actually intrusive igneous rocks.
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संबंधित प्रश्न
Name three types of rocks.
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The rock which is made up of molten magma is
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Gold, petroleum and coal are examples of
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Limestone is changed into marble.
What are fossils?
Mention the various types of rocks.
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Which one of the following is not a single element mineral?
