Words relating to rivers
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each of the black spaces below before clicking
on it to display the answer.
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| Condensation | The cooling of a gas so that it changes into a liquid, for instance as water vapour cools, it condenses to become water droplets, which, when heavy enough, fall as rain
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| Confluence | Where two rivers meet and join to form one larger river.
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| Delta | A build up of sediment at the point where a river meets a sea or lake, due to the water velocity slowing and the river having less energy to carry the sediment.See later section for details.
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| Drainage Basin | The area of land drained by a river and its tributaries.
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| Estuary | The point at which a river begins to meet the sea. The river will be tidal, meaning that it will have both salt water and fresh water in it.
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| Evaporation | Water that is warmed, usually by the sun, so that it changes into a gas (water vapour).
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| Evapo-transpiration | The combination of evaporation and transpiration.
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| Fluvial | relating to a river, from the Latin for water.
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| Groundwater | see Percolation
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| Hydrology | The study of water
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| Infiltration | The downward movement of water that seeps into the soil or a porous rock.
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| Mouth | The end of the river, where it meets the sea, or a lake.
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| Overland Flow | When water flows over the surface of the ground. This occurs for a number of reasons
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| Percolation | The movement of water through the soil or underlying porous rock. This water collects as groundwater.
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| Precipitation | Waterfalling to Earth in any form
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| Surface Run-off | see Overland Flow
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| Throughflow | the movement of water with in the soil sideways, towards the river.
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| Transpiration | The water loss from vegetation into the atmosphere.
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| Tributaries | rivers running into the main one, that form part of the same drainage basin system.
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| Velocity | The speed of the flow of the river.
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| Watershed | The imaginary dividing line between neighbouring drainage basins.
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