IB ESS SL 1.2.5 Open Vs Closed Systems Questions
Use real SL exam questions to classify environmental systems by the matter and energy exchanged across their boundaries.
- Syllabus
- First assessment 2026
- Course
- ESS SL
- Level
- SL
Exam points
- Classify a lake as an open system by identifying matter and energy crossing its boundary.
- Distinguish a closed system from an open system by stating whether matter, energy or both cross the boundary.
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IB ESS SL 1.2.5 Open Vs Closed Systems Questions question 1
Figure:Simplified map of the Lake Shergar area
the municipal-waste recycling chart shown above: A simplified diagram of the Lake Shergar area.
The lake provides a water supply for the local population.
Outline why this lake may be considered an open system.
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