DP Physics (last assessment 2024)
Question 17N.3.HL.TZ0.20b
| Date | November 2017 | Marks available | [Maximum mark: 3] | Reference code | 17N.3.HL.TZ0.20b |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 3]
17N.3.HL.TZ0.20b
(b)
Suggest how fluctuations in the cosmic microwave background (CMB) radiation are linked to the observation that galaxies collide.
[3]
Markscheme
fluctuations in CMB due to differences in temperature/mass/density
during the inflationary period/epoch/early universe
leading to the formation of galaxies/stars/structures
gravitational interaction between galaxies can lead to collision
[Max 3 Marks]
