Posted: March 28th, 2023
Geography rivers
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Source
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The start of a river
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Tributary
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A smaller stream/river that flows into a larger
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Mouth
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The end of a river
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Course
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The route a river takes to reach the sea
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Drainage basin
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The area of land drained by a river
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Estuary
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The part of a river mouth that is tidal
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Confluence
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The point when two rivers join
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The 3 stages of a river
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Youthful, mature, old age
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Abrasion
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Stones being carried by the river break off/ erode the banks and bed of the river
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Attrition
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Small stones break as they hit off of each other
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Solution
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Materials are dissolved by acid in the water
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Hydraulic action
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The force of moving water erodes river bank and bed
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Suspension
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Light materials such as sand and silt float along in the water
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Rolling
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Large stones are rolled along the bed of a river -traction
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Bouncing
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Pebbles are bounced along the bed - saltation
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V-shaped valley
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Formed in the youthful stage of a river, the force of moving water cuts downwards into the river bed, making it deeper and v-shaped over time
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Meanders
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Curves/bends that are formed in the river by lateral erosion and hydraulic action in the mature stage
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Delta
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When a river slows down at its mouth in the old age stage and the sea is calm the river forms piles of sediments making the river spilt into smaller distributary channels
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