Edexcel IGCSE Physics · Spec 8.7-8.12P
Star Colour, Magnitude and the Hertzsprung-Russell Diagram
Covers link star colour to surface temperature, Distinguish apparent and absolute magnitude and Interpret the main regions of an H-R diagram.
Physics revision video
Star Colour, Magnitude and the Hertzsprung-Russell Diagram
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Spec 8.7-8.12P
What you need to know
- Link star colour to surface temperature
- Distinguish apparent and absolute magnitude
- Interpret the main regions of an H-R diagram
Active recall
Quick check
Answer each question before opening the answer.
Which colour stars are hottest?
Blue
What standard distance defines absolute magnitude?
10 parsecs
Where are white dwarfs on an H-R diagram?
Lower left: hot but dim
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