Cambridge IGCSE Environmental Management practice
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At a glance
MCQ
Type
cambridge_mcq
Style
Topic
Management of oil pollution
Exam-style question
Which of the following is a method to prevent oil spills from ships?.
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Common mistake
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Flashcard 1 of 6
Question 1 of 5
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Method
A rectangular water tank is filled with water. A measured amount of oil is added to one end. A boom is placed to contain the oil. The spread of oil beyond the boom is observed and recorded over time.
| Step | Description |
|---|---|
| 1 | Fill tank with water |
| 2 | Add measured oil at one end |
| 3 | Place boom across tank |
| 4 | Observe and record oil spread beyond boom every 5 minutes |
Identify the independent variable in this investigation.
Aim for approximately 1 distinct marking point.
Suggest one control variable that should be kept constant during the investigation.
Aim for approximately 1 distinct marking point.
Describe how you would improve the reliability of the results.
Aim for approximately 2 distinct marking points.
Explain one safety consideration when conducting this investigation.
Aim for approximately 2 distinct marking points.