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Name ______________________________ Class ___________________ Date __________________ Skills Worksheet Directed Reading A Section: The Effect of Gravity on Erosion and Deposition 1. What is mass movement? ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 2. What causes ice, rocks, and soil to move down a slope? ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ANGLE OF REPOSE 3. What is the “angle of repose”? ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ 4. What are three of the characteristics of a material that will affect its angle of repose? ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 8 Agents of Erosion and Deposition Name ______________________________ Class ___________________ Date __________________ Directed Reading A continued RAPID MASS MOVEMENT Match the correct definition with the correct term. Write the letter in the space provided. Some terms will not be used. _____ 5. a group of loose rocks falling down a steep slope _____ 6. sudden, rapid movement of rock and soil down a slope _____ 7. mudflows of volcanic origin a. b. c. d. e. f. landslide slump mudflow lahar rock fall monsoon _____ 8. rapid movement of a large mass of mud SLOW MASS MOVEMENT _____ 9. Extremely slow movement of material downhill is called a. slump. b. rock fall. c. creep. d. mudflow. 10. What are three factors that affect creep? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Science and Technology 9 Agents of Erosion and Deposition