Thursday, 26 March 2015

RIVERS- KEY TERMS

KEY TERMS:

Evaporation= Water turning into gas

Evapotranspiration= Water coming out of vegetation pores and evaporating into the sky

Groundwater flow= The slowest transfer of water within the drainage basin

Infiltration= The passage of water into the soil

Interception= The process by which raindrops are prevented from directly reaching the soil surface

Percolation= The downward movement of water within the soil surface

Waterfall= Formed when soft rock is eroded more easily than hard rock

Ox-bow lake= A horseshoe-shaped lake separated from an adjacent river

Potholes= Cylindrical holes drilled into the rocky bed of a river by turbulent high-velocity water

Traction= The rolling of the largest material on the river bed

Load= Any material carried by a river

Meanders= Bends in the river

Delta= Found at the mouth of the river formed by deposition

Floodplain= Created as a result of both erosion and deposition

Levees= Small raised banks found along the sides of the channel

Saltation= Small stones bounce or leapfrog along the channel bed

Abrasion= The scraping and rubbing action of materials carried along in the load

Hydraulic Action= the sheer power of moving water

Corrosion= Most active on rocks that contain carbonates


Attrition= The reduction in the size of fragments and particles within a river

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