1. (7th) Chapter 8-1 Cornell Notes
The Rock Cycle

2. Chapter 8-1 Key Questions
What is uniformitarianism?
What is the rock cycle?

3. Chapter 8-1 Key Terms geology- erosion- uniformitarianism-
igneous rock-
sedimentary rock-
metamorphic rock-
rock cycle-
magma-
lava-

4. Chapter Paragraph 1
geology: study of the structure and forces that make/shape Earth;
James Hutton studied erosion;
erosion: breaking down due to wind/water.

5. Chapter 8-1 Paragraph 2 Hutton’ principle called uniformitarianism;
it states that geological forces of the past same as today;
therefore Earth must be much older.

6. Chapter 8-1 Paragraph 3
3 types of rocks: igneous, sedimentary, metamorphic;
igneous: forms when molten material from below cools/hardens;
sedimentary: sediments deposited then pressed together;
metamorphic: existing rock changed by heat/pressure or chemical forces.

7. Chapter 8-1 Paragraph 4
rock cycle: series of processes on and below that change rocks from one type to another;
slow process, millions of years.

8. Chapter 8-1 Paragraph 5 magma one pathway through rock cycle;
magma: molten material beneath surface;
pathway may form volcano;
magma can harden into igneous rock;
lava: molten material above surface.

9. Chapter 8-1 Paragraph 6
erosion wears away igneous rock into sedimentary rock;
sedimentary rock then deposited as sediment ;
heat and pressure turns it into metamorphic rock.

10. Chapter 8-1 Paragraph 7 rock cycle constantly recycles;
forces push rock types underneath surface;
extreme heat/pressure begins cycle again.