| Date | May 2011 | Marks available | 2 | Reference code | 11M.3.SL.TZ2.14 |
| Level | Standard level | Paper | Paper 3 | Time zone | Time zone 2 |
| Command term | Label and Sketch | Question number | 14 | Adapted from | N/A |
Question
This question is about the properties of a star.
Describe what is meant by a
(i) constellation.
(ii) stellar cluster.
[3]
a.
On the Hertzsprung–Russell diagram above,
(i) label the position of Betelgeuse with the letter B.
(ii) sketch the position of main sequence stars.
[2]
c.
Markscheme
(i) a collection of stars that form a recognizable group (as viewed from Earth);
that need not be/are not close to each other/gravitationally bound;
(ii) stars that are gravitationally bound/forming an open arrangement/close to each other (in space);
a.
(i) position labelled B within shaded area;
Award [1] if label B is missing but point is clear.
(ii) generally the correct shape; (allow broad line)
c.
Examiners report
[N/A]
a.
[N/A]
c.
Syllabus sections
Option D: Astrophysics » Option D: Astrophysics (Core topics) » D.2 – Stellar characteristics and stellar evolution
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