A-Level Geography revision: Physical Geography. Learning objectives, key points, worked examples and practice questions across AQA, Edexcel, OCR, WJEC and CCEA.
Question: Explain the formation of a waterfall and gorge using geological structure
Model Answer:
River flows over hard rock (cap rock) onto soft rock below. Soft rock erodes faster (hydraulic action, abrasion) creating plunge pool and undercutting. Hard rock collapses -> waterfall retreats upstream -> steep-sided gorge left behind. Cap rock provides resistant layer
โ Practice Questions
Questions:
Describe formation of a spit
Compare constructive vs destructive plate margins
Explain factors affecting lag time on hydrograph
Evaluate hard vs soft engineering for flood management
Annotate a river long profile with processes/landforms
Worked example (10 min): Model the example question: Explain the formation of a waterfall and gorge using geological structure. Solution: River flows over hard rock (cap rock) onto soft rock below. Soft rock erodes faster (hydraulic action, abrasion) creating plunge pool and undercutting. Hard rock collapses -> waterfall retreats upstream -> steep-sided gorge left behind. Cap rock provides resistant layer
Practice (10 min): Students attempt the practice questions independently; circulate and support.
Plenary (5 min): Review answers and address misconceptions.
๐ Homework
Describe formation of a spit
Compare constructive vs destructive plate margins
Explain factors affecting lag time on hydrograph
Evaluate hard vs soft engineering for flood management
Annotate a river long profile with processes/landforms
๐งพ Assessment
Check practice answers against the model answer; use the built-in practice questions as formative assessment.