Name _____________________________________ Erosion and Deposition Scavenger Hunt Period Score Card Letter Question Answer 1 2 3 4 March 17, 2014 /48 Grade % Picture What is erosion? What are the agents that cause erosion? What is erosion through abrasion? What is erosion through grinding? What is erosion through dissolving? What is erosion through fast moving water? What structures are formed by erosion? How does deforestation cause erosion? Score /24 How does agriculture cause erosion? How does the use of fertilizers cause erosion? How does construction cause erosion? How do industrial and residential wastes cause erosion? How does mining cause erosion? What is deposition? How does deposition occur? What structures are formed by deposition? Score /24 Card A The movement of sediments from one place to another. Card B Water Wind Ice Gravity Human Factors Card C Small sediments are carried in the water that rub against other rocks. Card D Water pushing pebbles and rocks across the bottom of a river. Card E Water breaks down and absorbs sediments and rocks. Card F The faster that water moves, the bigger and heavier the sediments are that can be carried by the water. Card G 1 1. Canyons 2 2.Caves 3. Eroding River Banks 4. 4 Waterfalls 5. V-shaped Valleys 3 5 Card H Deforestation allows water and wind to move over the soil more easily, resulting in the loss of topsoil. Card I Agriculture (crops & livestock grazing) causes: 1. the removal of natural vegetation, 2. breaks soil into smaller particles, 3. loosens soil particles from the ground, and 4. turning the area to a desert. Result: water and wind can remove the particles more easily. Card J Using pesticides (kills insects) and fertilizers (adds nutrients) can kill organisms that help hold the soil together. Card K Construction removes natural vegetation, increases water runoff, and increases surface wind speeds. Card L Industrial and residential wastes can release acids into the soil that break down the particles into smaller pieces that are easier to remove by wind and water. Card M Mining involves the removal of soil and rocks from the ground and mountain tops. Card N Erosion Deposition is the dropping of sediments at new location where they accumulate together. Deposition Card O When the agent of erosion (wind, water, or ice) slows down, it drops sediments that it has been carrying. Card P Deposition River 1. Erosion Levee 2. Delta 3. Sand Dunes