Coastal Erosion: Explaining the Science

Section role: supports the 'The Science of a Shifting Coast' section while the teacher formalizes student observations and introduces key geographical theory and terminology. Slides: (1) Title — 'The Science of a Shifting Coast'; (2) Longshore Drift — bullets: visual diagram showing zigzag movement of sediment along a coast, explanation of how waves approach the shore, connection to the 'Shoreview Town Council Challenge' regarding sand movement; (3) Hard Engineering Explained — bullets: definition, photo of a sea wall, photo of groynes, explanation of their impact on wave energy and sediment; (4) Soft Engineering Explained — bullets: definition, photo of beach nourishment, explanation of how it works with natural processes; (5) The Four Processes of Coastal Erosion — bullets: definition of Hydraulic Action with a simple diagram, definition of Abrasion with an example, definition of Attrition, definition of Solution; (6) Managed Retreat: A Sustainable Solution? — bullets: definition, discussion of social challenges, when it might be considered. Closing slide: 'Which strategies did the Shoreview Town Council consider, and why might some cause problems for a neighboring town?' — prompts students to connect back to the earlier challenge and prepare for further evaluation.

Lara from Teachy