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