MYP Physics · 16 · multiple choice
Read a model without mistaking it for space
Space physics · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- recall
- Marks
- 3
- Topics
- 2
- Answer
- Complete
A student says, ‘A star in the top-left of a Hertzsprung–Russell diagram must be physically above and left of another star in space.’ Which response is best?
- a
Select and explain Select the best response and name two properties represented on an H–R diagram.
3 marks
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a
Select and explain Select the best response and name two properties represented on an H–R diagram.
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
Selects option C: the H–R diagram axes represent stellar properties rather than positions in space.
- 2
Names luminosity or absolute brightness as one represented property.
- 3
Names surface temperature, colour, or spectral class as the other represented property.
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