2. a. Weathering b. Mechanical weathering only c. Erosion d. deposition

3. a. Wind b. Running water c. The movement of a glacier d. gravity

4. a. Wind b. Waves c. Tides d. Running water

5. a. Tens of years b. Hundreds of years c. Thousands of years d. Millions of years

6. a. Only weathering b. Only erosion c. Weathering and erosion d. Movement of a glacier

7. a. Movement of water from one place to another. b. Weathering rock c. Movement of soil from one place to another d. Creation of topsoil

8. a.Hurricanes and volcanoes may occur b. Volcanoes may occur c. Volcanoes and earthquakes may occur d. Earthquakes may occur

9. a. Fold b. Fault c.Weather d. Erupt

10. a. Weathering involves both disintegration and movement of rocks b. Erosion only applies to soil, but not rocks c. Erosion describes the movement of rocks d. Weathering only applies to rocks, not soil.

11. a.Heat and pressure b.Chemicals c.Heat and pressure, or chemicals d.Heat, pressure and chemicals