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Guess the next topic……….?. Flooding - its causes and effects. Recent adverts warning people of flood dangers. Devastation of floods. Why do some rivers flood and others don’t ?. In pairs try to come up with a reason. (Try to think back to how water passes through a drainage basin )

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Presentation Transcript
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Flooding -

its causes and effects

slide8

Why do some rivers flood and others don’t ?

In pairs try to come up with a reason

why do you think floods happen
(Try to think back to how water passes through a drainage basin )

(Flooding is more likely to occur when water travels rapidly over the surface, what conditions encourage this?)

Why do you think Floods happen?
causes of flooding in pairs try to think how each of the below factors affect flooding
Physical Causes

Types of precipitation

Types of soil and underlying rock

Land use

Steepness of drainage basin

Humans Causes

Deforestation

Urban growth.

River management

Global Warming

(Table experiment )

Causes of Flooding(In pairs try to think how each of the below factors affect flooding)

Use the copy of ‘Why some rivers flood (Key Geog) to complete notes on above factors

Answer the questions

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