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