What are called igneous rocks
Answers
Answer: Igneous rocks are formed due the solidification of lava over millions of years.
Explanation: Sometimes, lava gets solidified right under the earths crust. But once the reach the earths surface, thay take a long time to harden and form igneous rocks.
Answer:
The word 'Igneous' is derived from the Latin word 'ignis' meaning fire. These rocks were formed due to cooling, solidification and crystallisation of hot molten material of the earth known as magma found at great depths in the interior of the earth. The chemical composition of these rocks varies from alumino-silicate minerals like quartz and feldspar to granite and rhyolite collectively known as Sialic rocks. Since, the igneous rocks were the first to be formed, they are called primary rocks. They form the basis of formation of other types of rocks.
Explanation:
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