Students in Portugal went to six sites along a local river to do a fieldwork investigation on changes in the river channel downstream. The river which they studied flows 13km from the Sintra Hills to the Atlantic Ocean. The students investigated the following hypotheses: Hypothesis 1: The area of the cross section of the river channel increases downstream. Hypothesis 2: Average velocity of river flow increases downstream.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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