THE LIFE THE LIFE OF A OF A

RIVERRIVER

FROM SOURCE FROM SOURCE TO THE SEA TO THE SEA

What happens when water reaches the ground?What happens when water reaches the ground?

CONDENSATIONCONDENSATION

EVAPORATIONEVAPORATION

PRECIPITATIONPRECIPITATION

SEA

LAND

A SIMPLIFIED WATER CYCLEA SIMPLIFIED WATER CYCLE

Key WordsKey Words

EVAPORATIONEVAPORATION

CONDENSATIONCONDENSATION

PRECIPITATIONPRECIPITATION

RUN-OFFRUN-OFF

PERCOLATIONPERCOLATION

GROUND WATERGROUND WATER

WATER STORESWATER STORES

When water vapour changes to liquid (cooling)When water vapour changes to liquid (cooling)

Water in any form that falls to earth e.g. rainWater in any form that falls to earth e.g. rain

When the ground water moves through the landWhen the ground water moves through the land

When water vapour changes to liquid (warming)When water vapour changes to liquid (warming)

The water that is stored within the groundThe water that is stored within the ground

Water that is stored e.g. ground,clouds,air etc.Water that is stored e.g. ground,clouds,air etc.

Water that moves directly along the ground Water that moves directly along the ground without penetrating.without penetrating.

Put the correct definition to the given word~one has been done for youPut the correct definition to the given word~one has been done for you

River Basins River Basins Key WordsKey Words

• Where a river begins is called the Source.Source.• A small river meeting a larger river is called a TributaryTributary. • Where the two rivers join is called the Confluence Confluence • Rapids and Waterfalls Rapids and Waterfalls form where the river is steep.• Meanders and Ox Bow lakes Meanders and Ox Bow lakes form where the river is

flatter. • Where the river flows into the sea is called the MouthMouth.• The part of the river affected by tides is the EstuaryEstuary• The area drained by a river is called the Drainage basin.Drainage basin.

THE LONG PROFILE OF A RIVERTHE LONG PROFILE OF A RIVERUpper CourseUpper Course Middle CourseMiddle Course Lower courseLower course

SOURCESOURCE

MOUTHMOUTH

The Upper CourseSteep Rapids and Waterfalls

The Middle CourseMeanders and Ox Bow Lakes

The Lower Course Deltas, Estuary and the Mouth