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