Where two rivers meet and join to form one larger river.
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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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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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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: the soil may be saturated and therefore be unable to absorb any more water; the underlying rock may be impermeable or the ground may be frozen.
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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: e.g. rain, sleet, hail, snow, and dew, all are encompassed by the term precipitation.
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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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Watershed
The imaginary dividing line between neighbouring drainage basins
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Other cards in this set
Card 2
Front
The area of land drained by a river and its tributaries.
Back
Drainage basin
Card 3
Front
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.
Back
Card 4
Front
Water that is warmed, usually by the sun, so that it changes into a gas (water vapour).
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