Rivers - Keywords

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conversion of liquid into a gas or vapour

• Condensation

• Evaporation

• Abrasion

• Attrition

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conversion of vapour or gas into a liquid

• Condensation

• Evaporation

• Abrasion

• Attrition

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Water falling from the sky in the form of rain, hail, snow, etc.

• Freezing rain

• Rivers

• Precipitation

• Attrition

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The start of a river

• Source

• Mouth

• Channel

• Tributary

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The end of a river

• Source

• Mouth

• Channel

• Tributary

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An area of land drained by a river. All the precipitation collected is drained by the same river.

• Tributary

• Precipitation

• Watershed

• Drainage Basin

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The boundary of a drainage basin, defined by high relief (mountains).

• Tributary

• Precipitation

• Watershed

• Drainage Basin

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A small river that contributes water to the main river in a drainage basin.

• Tributary

• Precipitation

• Watershed

• Drainage Basin

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The material being carried by the river hits the sides and bed of the channel, each impact breaking pieces off the bed and banks.

• Abrasion

• Attrition

• Hydraulic Action

• Corrosion/Solution

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Rocks and stones in the river bang against each other, chipping bits off so the rocks become more rounded and smaller.

• Abrasion

• Attrition

• Hydraulic Action

• Corrosion/Solution