IB Physics SL A.3.3 Sankey diagrams

Practise reading and drawing Sankey diagrams, using arrow widths to compare useful output and wasted energy or power.

Exam points

interpret arrow widths to calculate a missing loss or output, such as thermal power loss from a station diagram
construct a labelled Sankey diagram with widths scaled to given input, useful output and waste power values
explain loss arrows physically, linking transmission losses to heating in wires or inefficiencies in transformers

[Maximum number: 3]

On the grid, sketch a labelled Sankey diagram that represents the energy transformation in this OWC.

Figure for Question A.3.3—Sankey diagrams question 1 — IB Physics SL

Diagram correct shape (but scaled incorrectly) and labelled.
Waste energy $0.32\ ext{MW}$ (allow ECF from (b)(i)).
All dimensions scaled correctly (by eye).

Figure for Answer to Question A.3.3—Sankey diagrams question 1 — IB Physics SL

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A.3.3—Sankey diagrams question 1