Meander

Through flow

Discharge

Source

Mouth

Tributary

Confluence

Bank

Overland flow

Rivers: The water cycle

Aims:

•To become familiar with the water cycle as a system

•To be able to use the words: PRECIPITATION, CONDENSATION and EVAPORATION

Skills: Labelling diagrams

A System?

INPUTS PROCESSES OUTPUTS

Closed system – where inputs and outputs remain in the system. Nothing outside the system can contribute to it.

Open System – where inputs and outputs come from outside the system. Things outside the system can contribute to it.

Evaporation

Condensation

Precipitation

Rivers

Base Flow

Through Flow

Transpiration

The water cycle

The water cycle

The drainage basin

river

evapotranspiration

precipitation

throughflow

surface runoff

groundwater flowwater table

interception

percolation

infiltration

The drainage basin

Drainage basin system

inputs stores and flows outputs

precipitation interception

surface runoff

surface water storage

soil water storage

groundwater storage

infiltration

river runoff

evaporation

transpiration

groundwater flow

throughflow

percolation

The Adventures of Drippy- A Water Droplet Story

Catching the Evaporation lift Getting colder and condensation Gripping onto a dust particle

Precipitating Into a river Back to the Sea

Starting to evaporate Condensation Precipitation

Infiltrating the ground with lots of other droplets

Percolating into the water table Entering the river via the water table

In the river At the river mouth Starting to evaporate

journey

HW: Complete Water Cycle Sheet

Meander

Through flow

Discharge

Source

Mouth

Tributary

Confluence

Bank

Overland flow