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Biology 7 Online
OpenStudy (anonymous):

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order. 1. Rock melts due to high temperature. 2. Rock is buried deep under Earth's surface. 3. Magma is forced out of Earth's surface during volcanic eruption. 4. Magma cools and crystallizes. Which of these best shows the correct order of steps in the formation of extrusive igneous rocks?

OpenStudy (anonymous):

Extrusive means the igneous rock is formed is outside the volcano

OpenStudy (anonymous):

A) 1, 3, 4, 2 B) 2, 1, 3, 4 C) 3, 4, 2, 1 D) 4, 2, 1, 3

OpenStudy (anonymous):

B) but you need to know why

OpenStudy (anonymous):

Rocks melting due to heat and pressure are metamorphic so 1 can't be last. While Igneous are formed but the cooling of magma (outside the volcano) or lava (inside the volcano). This means 4 must be last

OpenStudy (anonymous):

thank you so much

OpenStudy (anonymous):

If you need any more help just post

OpenStudy (anonymous):

yes i will be posting more now

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