What is the difference between igneous rock that cools above and igneous rock that cools below ground?

Answer 1

That depends on where it cools. Igneous rock forms from magma or lava (there's a difference!) cools and hardens. Extrusive igneous rock forms above the earth's crust, like when the lava from a volcanic eruption hardens. Intrusive igneous rock cools inside the earth when conditions change and the area around the magma cools allowing the magma to cool.

Answer 2

Extrusive igneous rocks form at or near the surface.

Answer 3

An extrusive igneous rock cools much more faster than an intrusive igneous rock and extrusive's have smaller crystal sizes than an intrusive

Answer 4

Extrusive igneous rocks are formed above Earth's surface - these include basalt, pumice, rhyolite, obsidian, andesite

Answer 5

intrusive, igneous rock forms when lava cools below the earth's surface

Answer 6

Volcanoes.

Answer 7

below