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Rocks
Term | Definition |
---|---|
Igneous Rock | forms when magma or molten rock, cools and hardness |
Magma | LAVA- Think of Lavagirl |
Crystalline | highest cold point |
Intrusive | magma cools below ground |
Extrusive | magma cools below ground; larger crystals can form |
Coarse-grained | mostly grained |
Fine-grained | no big crystals |
Porphyritic | rock with a mix of large and small crystals; granite is an example |
Glassy | smoothness |
Vesicular | air bubbles |
Felsic | in light color |
Mafic | in dark color |