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Galaxy Structure

Description: This quiz will test your knowledge about the structure of galaxies.
Number of Questions: 15
Created by:
Tags: galaxies structure astronomy
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What is the most common type of galaxy in the universe?

  1. Elliptical galaxy

  2. Spiral galaxy

  3. Irregular galaxy

  4. Lenticular galaxy

Show answer
Correct Option: B
Explanation:

Spiral galaxies are the most common type of galaxy in the universe, accounting for about 70% of all galaxies.

What is the shape of an elliptical galaxy?

  1. Round

  2. Oval

  3. Flat

  4. Irregular

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Correct Option: A
Explanation:

Elliptical galaxies are round or oval in shape.

What is the shape of a spiral galaxy?

  1. Round

  2. Oval

  3. Flat

  4. Irregular

Show answer
Correct Option: C
Explanation:

Spiral galaxies are flat, disk-shaped galaxies with a central bulge.

What is the shape of an irregular galaxy?

  1. Round

  2. Oval

  3. Flat

  4. Irregular

Show answer
Correct Option: D
Explanation:

Irregular galaxies have no definite shape.

What is the central bulge of a spiral galaxy?

  1. A large, round region of stars

  2. A small, round region of stars

  3. A flat, disk-shaped region of stars

  4. An irregular region of stars

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Correct Option: A
Explanation:

The central bulge of a spiral galaxy is a large, round region of stars.

What are the spiral arms of a spiral galaxy?

  1. Long, thin regions of stars

  2. Short, thick regions of stars

  3. Flat, disk-shaped regions of stars

  4. Irregular regions of stars

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Correct Option: A
Explanation:

The spiral arms of a spiral galaxy are long, thin regions of stars.

What is the Milky Way galaxy?

  1. An elliptical galaxy

  2. A spiral galaxy

  3. An irregular galaxy

  4. A lenticular galaxy

Show answer
Correct Option: B
Explanation:

The Milky Way galaxy is a spiral galaxy.

What is the largest galaxy in the universe?

  1. IC 1101

  2. UGC 2885

  3. M87

  4. NGC 4889

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Correct Option: A
Explanation:

IC 1101 is the largest galaxy in the universe.

What is the smallest galaxy in the universe?

  1. M33

  2. Andromeda

  3. NGC 205

  4. Segue 2

Show answer
Correct Option: D
Explanation:

Segue 2 is the smallest galaxy in the universe.

What is the distance between the Milky Way and Andromeda galaxies?

  1. 2.5 million light-years

  2. 5 million light-years

  3. 7.5 million light-years

  4. 10 million light-years

Show answer
Correct Option: A
Explanation:

The distance between the Milky Way and Andromeda galaxies is 2.5 million light-years.

What is the Local Group?

  1. A group of galaxies that includes the Milky Way and Andromeda galaxies

  2. A group of galaxies that includes the Milky Way and M31 galaxies

  3. A group of galaxies that includes the Milky Way and M33 galaxies

  4. A group of galaxies that includes the Milky Way and M87 galaxies

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Correct Option: A
Explanation:

The Local Group is a group of galaxies that includes the Milky Way and Andromeda galaxies.

What is the Virgo Supercluster?

  1. A supercluster of galaxies that includes the Milky Way and Andromeda galaxies

  2. A supercluster of galaxies that includes the Milky Way and M31 galaxies

  3. A supercluster of galaxies that includes the Milky Way and M33 galaxies

  4. A supercluster of galaxies that includes the Milky Way and M87 galaxies

Show answer
Correct Option: A
Explanation:

The Virgo Supercluster is a supercluster of galaxies that includes the Milky Way and Andromeda galaxies.

What is the Laniakea Supercluster?

  1. A supercluster of galaxies that includes the Milky Way and Andromeda galaxies

  2. A supercluster of galaxies that includes the Milky Way and M31 galaxies

  3. A supercluster of galaxies that includes the Milky Way and M33 galaxies

  4. A supercluster of galaxies that includes the Milky Way and M87 galaxies

Show answer
Correct Option: A
Explanation:

The Laniakea Supercluster is a supercluster of galaxies that includes the Milky Way and Andromeda galaxies.

What is the observable universe?

  1. The part of the universe that we can see

  2. The part of the universe that we can touch

  3. The part of the universe that we can hear

  4. The part of the universe that we can smell

Show answer
Correct Option: A
Explanation:

The observable universe is the part of the universe that we can see.

What is the size of the observable universe?

  1. 93 billion light-years

  2. 12 billion light-years

  3. 25 billion light-years

  4. 46 billion light-years

Show answer
Correct Option: A
Explanation:

The size of the observable universe is 93 billion light-years.

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