DP Physics (last assessment 2024)
Question 18N.3.HL.TZ0.17a
| Date | November 2018 | Marks available | [Maximum mark: 2] | Reference code | 18N.3.HL.TZ0.17a |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Distinguish | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
18N.3.HL.TZ0.17a
A distinctive feature of the constellation Orion is the Trapezium, an open cluster of stars within Orion.
(a)
Distinguish between a constellation and an open cluster.
[2]
Markscheme
In cluster, stars are gravitationally bound OR constellation not ✔
In cluster, stars are the same/similar age OR in constellation not ✔
Stars in cluster are close in space/the same distance OR in constellation not ✔
Cluster stars appear closer in night sky than constellation ✔
Clusters originate from same gas cloud OR constellation does not ✔
