Intrusive And Extrusive Igneous Rocks
Intrusive igneous rocks cool from magma slowly in the crust. They have large crystals. Extrusive igneous rocks cool from lava rapidly at the surface. They have small crystals.
CK-12 (Middle School)
How do scientists classify the two types of igneous rocks?
RST.1 - Analysis & Evidence, RST.2 - Main Ideas, RST.4 - Key Terms
DEPTH OF KNOWLEDGE (DOK) LEVELS:
2,3Read this assignment in Actively Learn