Exploring the Cosmos - Degree Exam 2011 - Galaxies and Large Scale Structure
1. Which of the following is a characteristic of Population I stars?
Population I stars are 'metal poor'.
Population I stars are 'metal rich'.
Population I stars are often found in globular clusters.
Population I stars often have a reddish colour.
2. Which of the following is a source of heavy elements?
Planetary nebulae.
Emission nebulae.
Reflection nebulae.
Dark nebulae.
3. Which of the following galaxy types belongs to the barred spiral galaxies?
S0
SBa
Sb
E4
4. Which of the following parts of our Galaxy can we not observe using visible light?
Spiral arms
Globular clusters
Open clusters
Galactic centre
5. Which of the following characteristics is true for elliptical Galaxies?
Lots of interstellar medium is present in elliptical galaxies.
Elliptical galaxies often rotate fast.
In elliptical galaxies there is very little active star formation.
Elliptical galaxies mainly feature Population I stars.
6. Which part of our galaxy features strong star formation?
Globular clusters
Halo
Central bulge
Spiral arms
7. An S0 galaxy can evolve into which of the following galaxy types?
Sc
SBb
Sa
Galaxies cannot evolve from one type into another.
8. Which of the following are not active galaxies?
Radio galaxies
Quasars
Seyfert galaxies
Infrared galaxies
9. Which of the following statements is not correct?
Our Galaxy has two disks.
Open clusters are mainly found in the disk.
The central bulge is thicker than the galactic disk.
The halo components move in nearly circular orbit around the centre of the galaxy.
10. Which of the following statements is correct?
The position of the solar system within our galaxy was first determined using the position of nearby O and B stars.
The position of the solar system within our galaxy was first determined using the 21 cm line.
The position of the solar system within our galaxy was first determined using the position of globular clusters.
The position of the solar system within our galaxy was first determined using the position of open clusters.
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