Erosion and Deposition Questions 1. Describe the three ways rock is eroded and three ways rock is deposited. a. Eroded Rocks: flowing water, wind, glaciers, and waves. b. Deposited Rocks: slowing water, slowing wind, and melting glaciers. 2. Describe how rocks in the Cascade Mountains become sand on a beach along the California coast. a. Rock is weathered by roots, ice, abrasion, chemicals, and gravity. b. It is then eroded (transported) by streams and rivers until it reaches the sea. c. It is deposited at the shore when the river flows into the sea. Q. What will happen to the Sierra Nevada in California in the next hundred million years? a. They will probably weather and erode, ending up as sand in the sea. Q. What is the role of erosion and deposition in the rock cycle? a. weathering and erosion break down and transport existing rocks, depositing them in other places. After millions of years, the sediments will cement into new sedimentary rocks.