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Watersheds & Land

Week 25 Science Study Guide

A watershed is all the land that water flows over or through before reaching a lake, river, or ocean.
River erosion caused the Grand Canyon to form.
A fan shaped mouth of a river that forms from deposition of sediments carried by the river as it empties into the ocean is called a delta. 
A canyon is a narrow valley with steep walls created by a river weathering or eroding away soft rocks.
Watersheds are located between higher elevations such as ridges, hills, and mountains.
Flood water pounding against a canyon wall and wearing it down is called weathering.
Rain washing soil away from a hillside is called erosion.
Deposition is the process by which materials that have been eroded are dropped in a new place. 
Humans can cause erosion through activities such as cutting down trees, farming, and ranching.
Water getting int cracks, freezing, and breaking the rocks or pavement apart is a form of weathering.  
A tributary is a stream that flows into a larger stream or other body of water.
Coastlines are areas of land that wave erosion changes over time.
Water is the main cause of erosion on earth.
Created by: rowlandm4


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