What are the human and physical causes of floods?Starter: Look at the pictures on the board and write down a

list of the causes of floods

• Write down as many of the causes of the 2004 Bostcastle flood

http://www.bbc.co.uk/learningzone/clips/why-did-boscastle-flood/14072.html

From your list decide if they’re physical or human

- Rock type- Gradient- Urbanisation- Amount of rain- Length of rainfall- Temperature- Size and shape of drainage basin- Temperature- Vegetation

• Annotate pictures with human and physical causes using pg 72 and 73

• From the causes create a mind map with linking effects

Question:

• 5. Use the figures 2(a) and 2(b) to describe the links between the changes in land use and surface run-off in Long Eagle Creek drainage basin. (5)

• 6. Explain how two of the physical characteristics of a drainage basin can increase the risk of flooding. (10)

Plenary…

• Humans make bad floods worse!?

• Interception• Infiltration• Upper course• Meander• Waterfall• Watershed• Interlocking spurs• Middle course• Drainage basin• Physical• Cause• Boscastle

Homework

• Find out what the Bradshaw model is• Draw the model large in your book with

annotations and diagrams for the different features.

• Answer this question: ‘With use of the Bradshaw model, explain how rivers change from source to mouth.’

• Hydrograph?

Homework• Find out what the Bradshaw model

is• Draw the model large in your book

with annotations and diagrams for the different features.

• Answer this question: ‘With use of the Bradshaw model, explain how rivers change from source to mouth.’

• Write flow diagrams of the formation of waterfalls, meanders, levees and floodplains

Homework• Find out what the Bradshaw model

is• Draw the model large in your book

with annotations and diagrams for the different features.

• Answer this question: ‘With use of the Bradshaw model, explain how rivers change from source to mouth.’

• Write flow diagrams of the formation of waterfalls, meanders, levees and floodplains