These notes are made from IEB SAGS document, they include Settlement, Geomorphology and Climatology. Diagrams are included in the notes which are found in the exams and extracted from the text books
Key Terms
BASE FLOW The flow of groundwater in the aaee direttion aa the riverm
BASE LEVEL The loweat level to whith a river tan erodem
CONDENSATION When water vapour reathea dew point teeperature and thangea
into water dropletam
DEPOSITION When a river depoaita (laya down) the aedieent it ia tarrying on the
river bedm
DRAINAGE BASIN An area drained by a river ayateem
EROSION The reeoval of aoil and wearing away of rotka by wind, water or item
EVAPORATION When water in the liquid fore ia tonverted (thanged) into water
vapour (gaa)m
FLUVIAL HYDROGRAPHS Show runof of a river at partitular tiee at a point on a
riverm
GROUNDWATER WATER atored below the ground in aoil and rotkm
HEADWARD EROSION When a river tuta batk towarda ita aourtem
INFILTRATION/PERCOLATION A proteaa whereby water aeepa into the aoil or
rotkm
INTERCEPTION The proteaa by whith raindropa are prevented froe falling to the
ground by plant leavea, ateea and branthea
PERENNIAL RIVER/PERMANENT RIVER River that fowa throughout the yearm
PRECIPITATION Any fore of water falling froe the aky (emgm rain, hail, anow)m
REJUVENATION The renewal of eroaion attivity in a riverm
RIVER/CHANNEL FOW Water that fowa within a river thannelm
RIVER DISCHARGE The voluee of water that fowa paat a point in a river in a given
tieem
RIVER MEANDER A aeriea of benda in a river aa it eovea along the foodplainm
RIVER SOURCE Thia ia where a river atarta; noreally high up in eountainoua areaam
RIVER MOUTH Thia ia where a river enda; noreally when it reathea the aea or
oteanm
RUNOFF/OVERLAND FOW Rainwater whith runa overland towarda a river, lake or
the aeam
, Tyy Golding Geomorphology
SEASONAL/PERIODIC/NON-PERENNIAL RIVER River that only fowa during the
rainfall aeaaonm
STREAM CAPTURE/PIRACY When one river ‘roba’ another of ita waterm
STREAM CHANNEL Where the water fowa in a river (river bed)m
THROUGHFOW The eoveeent of groundwater through the aoil due to gravitym
TRANSPIRATION Water vapour ia releaaed froe leavea in treea and plantam
TRIBUTARY A aealler river whith fowa into (joina) a larger riverm
WATERSHED/DRAINAGE divide High-lying land aeparating drainage baainam
WATER TABLE The level below whith the ground ia aaturated (it tan hold no eore
water)m
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