Edexcel IGCSE Physics (c) Stellar evolution Question Bank
Practise interpreting star data, colour-temperature links, evolutionary pathways, absolute magnitude and Hertzsprung-Russell diagrams.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- use colour and temperature data to order stars from coolest to hottest
- predict stellar evolution from mass, including supernova, neutron star or black hole paths
- label or interpret HR diagram axes using temperature and absolute magnitude
Covered syllabus points
(c) Stellar evolution question 1
This question is about astrophysics.
Question (a)
(a)
Table 2 gives information about four different stars in the same galaxy as the Sun.
Table 2
[ 8 ]
Question (i)
(i)
Explain how the stars in table 2 can be classified according to their colour.
[ 3 ]
Question (ii)
(ii)
Describe the likely future evolution of Antares.
[ 3 ]
Question (iii)
(iii)
Describe what additional information is needed to predict the next evolutionary stage for Vega.
[ 2 ]
(c) Stellar evolution question 2
The student extends the investigation by recording additional data for the lamp.
This is her method.
For each voltage
- switch the current on for 45 seconds
- record the current and colour of the lamp
- calculate the power and the energy transferred by the lamp
The table shows the student's results.
The colour of a star is related to its surface temperature.
The Sun is yellow.
Use the student's results to identify a colour for a star that is cooler than the Sun.
(c) Stellar evolution question 3
This question is about stars.
Describe the stages in the evolution of a star similar in mass to the Sun.
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