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Extrusive rock

earth science Maturity 7-9

Hot rock flows out of a volcano.

Haüyne crystal.JPG
Haüyne crystal.JPG
It cools down very fast. This makes the rock very hard. It can even have tiny bubbles. Some rocks can float on water! Do you like looking at rocks?

38 words
🖼️ Images & Media (2)
File:Classification extrusive rocks EN.svg
Classification extrusive rocks EN.svg
File:Haüyne crystal.JPG
Haüyne crystal.JPG
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📚 Content adapted from Wikipedia | Readability: FK 11.9 | Vital Level 5