Powerpoint covering spit formation, using Spurn as a Case Study
Starter: simple (revision) sorting activity to sequence weathering, erosion, transportation and deposition
Main activities:YouTube videos and a mystery activity to find out how Spurn Head has formed. Pupils use mystery clues to complete and annotate a base map of southern Holderness and the Humber Estuary. Mini-plenary to recognise associated landforms in aerial photos
Second part uses bespoke, high tech (:D) series of diagrams (an animation if you click your mouse quickly enough!) which show why the point of the spit hooks (the role of secondary winds and wave refraction)
Final part gets pupils to sketch and annotate diagrams of Marram and Glasswort to show how dune and salt marsh plants and habitats are interdependent. Differentiated question... 1-3: Describe how salt marshes and sand dunes are held in position by plants 4-6: Why are salt marsh and sand dune environments natural sea defences? 7-9: What could happen to the Humber Estuary if the vegetation at Spurn Head is not protected?
Plenary: the 250 year cycle of spit formation and destruction at the mouth of the Humber Estuary