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

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 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 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 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