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Exam-style practice

Managing water-related disease practice questions

Practise mixed syllabus-aligned questions for Managing water-related disease. Aligned to Cambridge IGCSE Environmental Management.

Practice questions

Question 1 of 2

Choose an answer, get feedback, then move sideways through the set.

Paper 1 structured question: Managing water-related disease

Paper 1TheoryPractical6 marks

Method

Method to Test Mosquito Control Techniques

A student sets up three small enclosed areas with stagnant water to breed mosquitoes. Area A is left untreated as a control. Area B is treated with an insecticide spray. Area C has mosquito larvae removed daily. The number of adult mosquitoes emerging is counted after 10 days.

AreaTreatmentNumber of Adult Mosquitoes
ANo treatment50
BInsecticide spray10
CLarvae removal15
  1. a

    State the independent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Identify the dependent variable in this investigation.

    Aim for approximately 1 distinct marking point.

    [1]
  3. c

    Suggest one control variable that should be kept constant in this investigation and explain why.

    Aim for approximately 2 distinct marking points.

    [2]
  4. d

    Describe how the student could improve the reliability of the results.

    Aim for approximately 2 distinct marking points.

    [2]