Answers.com > Wiki Answers > Categories > Science > What are extrusive rocks and intrusives rocks?

What are extrusive rocks and intrusives rocks?

In: Science, Geology, Paleontology [Edit categories]

Answer:

Extrusive rocks are formed outside of earths surface. Intrusive rocks are formed inside earths surface.

First answer by ID1657156128. Last edit by ID1657156128. Question popularity: 3 [recommend question].

Can you answer these Science questions?

	What is the structure of respiratory system?	Answer it!
	What mammal has the greatest blood pressure?	Answer it!
	What are two different units to measure air pressure?	Answer it!
	How does mold help us?	Answer it!
	What is a Conersion problem?	Answer it!

How do extrusive rocks differ from intrusive rocks?
Extrusive rocks are igneous rocks that form when a volcano erupts on Earth's surface. Intrusive rocks form from the cooling of magma below the surface. Extrusive rocks usually have smaller crystals...
Is pumice an extrusive rock or intrusive rock?
It is igneous extrusive because it is formed when lava cools and hardens on the Earth's surface. Hope that helped!
Why is intrusive rock an extrusive rock?
It is not. An igneous rock is either one or the other.
Are basaltic rocks extrusive or intrusive?
Basaltic rock are true to be extrusive rock
Is scoria an intrusive or extrusive rock?
Scoria is an extrusive igneous rock with a vesicular texture.