A group of students is conducting fieldwork to investigate changes in channel characteristics along the course of a river.
The students planned to use a standard 50 cm ruler to measure the channel depth at regular intervals across the river. However, at their final downstream site, they found that the water depth in the middle of the channel exceeded 50 cm.
State one way they could adapt their fieldwork technique to measure the depth at this site.
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.