DP Physics (last assessment 2024)
Question 19M.3.SL.TZ2.b
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ2.b |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Outline | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19M.3.SL.TZ2.b
Outline how observations of spectra from distant galaxies provide evidence that the universe is expanding.
[1]
Markscheme
all distant galaxies exhibit red-shift ✔
OWTTE
Examiners report
Nearly all candidates were able to mention redshift as the evidence for galaxy recession and the universe expansion.
