Igneous Rock Classification

Igneous Rock Classification

Igneous rocks are classified first by composition. Categories go from from felsic to ultramafic. Color can indicate composition. Texture is second when classifying igneous rocks. Texture indicates how a rock cooled.

CK-12 (Middle School)

ESSENTIAL QUESTION:

How do scientists classify different igneous rocks?
STANDARDS:
RST.1 - Analysis & Evidence, RST.4 - Key Terms

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2,3
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