Weathing and Erosion

5. rain, sleet, or snow that contains a high concentration of acids.
6. the slow downhill movement of weathered rock material.
7. an area of the shoreline that is made up of deposited sediment.
9. the chemical breakdown and decomposition of rocks by natural processes in the environment.
13. a large mass of ice that exists year-round and moves over land.
14. an area along a river that forms from sediments deposited when the river overflows its banks.
15. the process in which material is laid down.
16. the water that is beneath the earths surface.
17. a mass of material deposited in a triangular or fan at the mouth of a river or stream.

1. the mechanical breakdown of rocks into smaller pieces that is caused by natural processes and does not change the chemical composition of a rock.
2. the process by which rock is reduced in size by the scraping action of other rocks driven by water, wind, and gravity.
3. the process by which wind, water, ice, or gravity transports soil and sediment from one location to another.
4. fine-grained sediments of quartz, feldspar, hornblende, mica, and clay deposited by the wind.
7. a long ridge of sand or a narrow island that is parallel to the shore.
8. the boundary between land and a body of water.
10. a fan-shaped mass of material deposited by a stream when the slope of the land decreases sharply.
11. the sudden movement of rock and soil down a slope.
12. chemical reaction in which a material combines with oxygen to form a new material.