1. Unit 3 Lessons 1-4
Study Guide Answers

2. 1. weathering , erosion, and deposition
3. holding the soil in place
4. deposition
5. weathering, erosion, deposition

3. 6. when cracks in a rock get bigger due to water inside of them freezing
7. river erosion
8. weathering
9. weathered bits of rock
10. when wind deposits sand in one place over and over again

4. 11. They slow down the wind, which causes the wind to deposit much of the material that it may be carrying. When wind is moving slowly and not carrying many materials, it causes less erosion.
12. weathering
13. to prevent erosion