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Science of Minecraft Igneous rocks.mp4Transcript:
Transcript:
Where do we get igneous rocks, Kim?
[Kim]: So igneous rocks are from volcanoes. So our Earth is very dynamic. We have lots of different places where volcanoes are erupting. You can even watch volcanoes erupting on YouTube right now, live, which is super cool. These are lava that's spewing onto the surface of the Earth, and that's what that image looks like there. You have molten rock, really really hot, that is pouring out, and then it cools off eventually and turns into our extrusive igneous rocks.
About Igneous Rocks
About Igneous Rocks
Over time, sedimentary or metamorphic rocks make their way into the Earth. Under intense heat and pressure, they become magma deep within the Earth. When magma reaches the surface, usually through a volcano, it becomes lava. When lava cools, it forms igneous rocks.
Rocks that cool quickly in air or water are fine-grained extrusive rocks. Rocks that cool slowly deep in the Earth are large-grained intrusive rocks.
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