1
2 marks
Complete the following sentence:
The atmosphere is primarily composed of two gases: approximately 78% is __________ and 21% is __________.
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Syllabus Edition
First teaching 2024
First exams 2026
Introduction to the Atmosphere (DP IB Environmental Systems & Societies (ESS): SL): Exam Questions
35 mins10 questions
2
1 mark
Outline one natural (non-human) input to atmospheric systems.
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3
1 mark
State the atmospheric layer in which most clouds form.
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4
3 marks
List three greenhouse gases.
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1
4 marks
Describe the role of the natural greenhouse effect in regulating Earth's temperature.
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2
2 marks
In relation to processes taking place within the atmospheric system:
State two transfers of energy.
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3
2 marks
In relation to processes taking place within the atmospheric system:
State two transformations of matter.
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4
4 marks
Outline how human activities affect two named atmospheric components.
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1
7 marks
Explain the role of the atmosphere in maintaining temperatures that can sustain life across the surface of the Earth.
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2
9 marks
Discuss the role of greenhouse gases and aerosols in regulating Earth's climate.
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