Two groups of students were doing fieldwork in the Rio Santa Valley in Peru. They chose four sites along the river to investigate how the river changes downstream.
The students investigated the following hypotheses:
Hypothesis 1: River velocity increases downstream.
Hypothesis 2: Rocks on the bed of the river (bedload) become smaller and more rounded downstream.

Q: What topic does this question test?

This question tests The natural environment in O-Level Geography (syllabus code 2217). It is worth 30 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge O-Level Geography Oct/Nov 2014 examination, Paper 2 Variant 3 (2217_w14_qp_23.pdf).

Question

Two groups of students were doing fieldwork in the Rio Santa Valley in Peru. They chose four sites along the river to investigate how the river changes downstream.
The students investigated the following hypotheses:
Hypothesis 1: River velocity increases downstream.
Hypothesis 2: Rocks on the bed of the river (bedload) become smaller and more rounded downstream.

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