Edexcel IGCSE Physics 8.9 Sun-like star evolution
Practise the life cycle of Sun-like stars, from nebula to main sequence, red giant and white dwarf, using tables and HR diagrams.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- select the stages that occur in the Sun's life cycle and reject high-mass outcomes
- describe the ordered path nebula, protostar, main sequence, red giant, white dwarf
- link changes in temperature and brightness to positions on an HR diagram
8.9 Sun-like star evolution question 1
[Maximum number: 4]
This question is about stars.
Describe the stages in the evolution of a star similar in mass to the Sun.
Any four correctly linked stages:
- MP1. nebula to protostar
- MP2. protostar to main sequence
- MP3. main sequence to red giant
- MP4. red giant to white dwarf
- MP5. white dwarf to black dwarf
Accept:
- cloud of dust/gas for nebula
- main stage for main sequence
- 1 marking point if a stage is missing, e.g. nebula to main sequence gets either MP1 or MP2
Marking guidance:
- Limit to 2 marks maximum if incorrect stages are given, e.g. red supergiant / supernova / neutron star / black hole.
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