A group of students are investigating longshore drift along a high-energy shingle beach. They plan to track sediment movement by releasing 100 local pebbles painted with bright, waterproof fluorescent paint at the shoreline, then searching for them visually two hours later.
However, they find that the high wave energy quickly buries the painted pebbles under layers of active shingle, resulting in a very low recovery rate.
State one way they could adapt their tracking technique to improve the recovery and detection of the tracer pebbles.
125 exam-style questions on Edexcel A GCSE Geography Investigating physical environments (rivers or coasts). Each one has a worked solution and a mark scheme showing where the marks go.