Question

how are extrusive and intrusive rocks formed?​

Answer 1

Answer:

Extr"usive rocks are formed on the surface of the Earth from lava, which is ma*gma that has emer*ged from underground. Intr*usive rocks are formed from magma that cools and solidifies within the crust of the planet. ... If lava cools almost ins*tantly, the rocks that form are glassy with no indiv*idual crystals, like obsidian

Explanation:

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Answer 2

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

If lava cools almost inst_antly, the rocks that form are glas__sy with no ind_ividual crystals, like obsidian.

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