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8th Grade Science
Earth Systems
15. Geology
Rock Cycle, Formation processes
The Rock Cycle: How Earth Continuously Transforms Its Rocks
Discover how igneous, sedimentary, and metamorphic rocks form and transform through Earth's continuous geological processes.
What You'll Learn
The rock cycle continuously transforms igneous, sedimentary, and metamorphic rock types.
Igneous rocks form when magma or lava cools and solidifies underground or surface.
Sedimentary rocks form through weathering, erosion, deposition, compaction, and cementation.
Heat and pressure deep underground transform existing rocks into metamorphic rocks.
What You'll Practice
1
Students identify rock types and classify formation processes using key vocabulary.
2
Learners distinguish contact metamorphism from regional metamorphism by scale and cause.
3
Practice questions test understanding of weathering, erosion, and lithification sequences.
Why This Matters
Understanding the rock cycle reveals how Earth continuously recycles its materials, forming the natural resources and landscapes that shape human civilization and the environment.
This Unit Includes
Practice exercises
Learning resources
Skills
Rock Cycle
Igneous Rocks
Metamorphism
Weathering
Lithification
