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Galactic Globular Clusters and Open Clusters

Description: Galactic Globular Clusters and Open Clusters Quiz
Number of Questions: 15
Created by:
Tags: globular clusters open clusters stellar evolution astrophysics
Attempted 0/15 Correct 0 Score 0

What is the typical age of globular clusters?

  1. 10 million years

  2. 1 billion years

  3. 10 billion years

  4. 100 billion years


Correct Option: C
Explanation:

Globular clusters are among the oldest objects in the universe, with typical ages of around 10 billion years.

Where are globular clusters typically located?

  1. In the center of galaxies

  2. In the spiral arms of galaxies

  3. In the halo of galaxies

  4. In the intergalactic medium


Correct Option: C
Explanation:

Globular clusters are typically found in the halo of galaxies, which is the region surrounding the galaxy's disk.

What is the typical size of a globular cluster?

  1. 10 light-years

  2. 100 light-years

  3. 1,000 light-years

  4. 10,000 light-years


Correct Option: B
Explanation:

Globular clusters typically have diameters of around 100 light-years.

How many stars are typically found in a globular cluster?

  1. 100

  2. 1,000

  3. 10,000

  4. 100,000


Correct Option: D
Explanation:

Globular clusters typically contain hundreds of thousands of stars.

What is the typical mass of a globular cluster?

  1. 10,000 solar masses

  2. 100,000 solar masses

  3. 1 million solar masses

  4. 10 million solar masses


Correct Option: C
Explanation:

Globular clusters typically have masses of around 1 million solar masses.

What is the typical metallicity of a globular cluster?

  1. 1%

  2. 10%

  3. 100%

  4. 1,000%


Correct Option: A
Explanation:

Globular clusters typically have metallicities of around 1%, which means that they contain only 1% of the heavy elements found in the Sun.

What is the typical color of a globular cluster?

  1. Blue

  2. White

  3. Yellow

  4. Red


Correct Option: D
Explanation:

Globular clusters are typically red in color, due to the large number of old, red stars they contain.

What is the typical shape of a globular cluster?

  1. Spherical

  2. Elliptical

  3. Irregular

  4. Disk


Correct Option: A
Explanation:

Globular clusters are typically spherical in shape.

What is the typical velocity dispersion of a globular cluster?

  1. 10 km/s

  2. 100 km/s

  3. 1,000 km/s

  4. 10,000 km/s


Correct Option: A
Explanation:

Globular clusters typically have velocity dispersions of around 10 km/s.

What is the typical orbital period of a globular cluster around its host galaxy?

  1. 10 million years

  2. 1 billion years

  3. 10 billion years

  4. 100 billion years


Correct Option: B
Explanation:

Globular clusters typically have orbital periods of around 1 billion years.

What is the difference between a globular cluster and an open cluster?

  1. Globular clusters are older than open clusters.

  2. Globular clusters are more massive than open clusters.

  3. Globular clusters are more metal-poor than open clusters.

  4. All of the above.


Correct Option: D
Explanation:

Globular clusters are older, more massive, and more metal-poor than open clusters.

What is the fate of a globular cluster?

  1. It will eventually merge with its host galaxy.

  2. It will eventually be destroyed by tidal forces.

  3. It will eventually evaporate.

  4. All of the above.


Correct Option: D
Explanation:

Globular clusters can eventually merge with their host galaxy, be destroyed by tidal forces, or evaporate.

What is the most famous globular cluster?

  1. Omega Centauri

  2. 47 Tucanae

  3. M13

  4. NGC 6397


Correct Option: A
Explanation:

Omega Centauri is the most famous globular cluster, due to its large size and proximity to Earth.

What is the most massive globular cluster?

  1. Omega Centauri

  2. 47 Tucanae

  3. M13

  4. NGC 6397


Correct Option: A
Explanation:

Omega Centauri is also the most massive globular cluster, with a mass of around 2 million solar masses.

What is the oldest globular cluster?

  1. Omega Centauri

  2. 47 Tucanae

  3. M13

  4. NGC 6397


Correct Option: B
Explanation:

47 Tucanae is the oldest globular cluster known, with an age of around 12 billion years.

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