CAIE A-Level Physics A2 25 Astronomy and Cosmology Questions
Practise using stellar and galaxy evidence for distances, temperatures, radii, redshift, Hubble’s law, cosmic expansion and the Big Bang.
- Syllabus
- 2028–2030
- Course
- Physics 9702
- Level
- A2
Exam points
- use luminosity, radiant flux and standard-candle observations to determine stellar or galaxy distances
- apply Wien?s displacement law and Stefan?Boltzmann law to infer stellar temperature, luminosity and radius
- identify and calculate redshift from spectral data
- use redshift relationships to determine recession speed or wavelength/frequency change
- explain the evidence for an expanding Universe
