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Science 6-2

Igneous Rocks

QuestionAnswer
Igneous Rock Formed when magma cools and hardens.
Magma Forms when rock melts.
Crystalline Rock that is full of crystals.
Intrusive Formed when magma cools beneath Earth's surface. It has larger crystals.
Extrusive Formed when magma cools at Earth's surface. It has smaller crystals.
Coarse-grained A texture of Igneous rock. One example is granite.
Fine-grained A texture of Igneous rock. One example is rhyolite.
Porphyritic A texture of Igneous rock. One example is granite.
Glassy A texture of Igneous rock. One example is obsidian.
Vesicular A texture of Igneous rock. One example is pumice.
Felisic Forms from magma with high concentration of silica. One example is granite.
Mafic Forms from magma with high concentration of iron and magnesium. One example is basalt.
Created by: hayleysmith00