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