DP Physics (last assessment 2024)
Question 18M.3.SL.TZ1.a
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.SL.TZ1.a |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Explain | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
18M.3.SL.TZ1.a
The Hubble constant is accepted to be 70 km s–1 Mpc–1. This value of the Hubble constant gives an age for the universe of 14.0 billion years.
The accepted value of the Hubble constant has changed over the past decades.
Explain how international collaboration has helped to refine this value.
[1]
Markscheme
experiments and collecting data are extremely costly
data from many projects around the world can be collated
OWTTE
[1 mark]
