Physical- Rivers Flashcards
What is the hydrological cycle?
The circulatory system by which water is transferred between oceans and landmasses.
What is the drainage basin?
The area of land (catchment area) from which a river system obtains its supply of water.
What is river discharge?
The amount of water flowing in a river, measured in cumecs.
What is the river regime?
The annual pattern of the discharge of a river responding to the regions climate.
What is the velocity?
The speed of a rivers velocity.
What is the long profile?
A cross-section of a river from its source to its mouth.
What is a estuary?
Area of lower river or mouth which is affected by tidal change.
What is evapotranspiration?
The total amount of moisture lost by evaporation and transpiration from a vegetated land surface.
What is infiltration?
Water soaking into the soil.
What is interception?
Raindrops are prevented from falling directly onto the soil surface by vegetation.
What is percolation?
Water seeping down through the soil into the groundwater store
What is throughfall?
Water dripping from one leaf to another.
What is Stemflow?
Water running down plant stems and branches.
What is throughflow?
Water moving slowly downhill through the soil.
What is groundwater flow?
Water flowing slowly below the water table through permeable rock.
What is channel flow?
Water flowing along the river itself.
Give the five types of river storage
Interception Vegetation storage Surface storage Groundwater storage Channel storage
What is vegetation storage?
Water taken up by plants
What is surface storage?
Puddles, ponds and lakes
What is groundwater storage?
Water collected underground in pore spaces in rock and soil. The top underground area that is saturated is the water table
What is channel storage?
Rivers, streams
What is an isolated system?
Nothing enters/leaves.
What is a closed system?
Inputs and outputs of energy but not matter e.g. Earth
What is an open system?
Inputs and outputs of both energy and matter e.g. Living things- river