Physics ยท Science General

Astronomy and Cosmology

4,498 Questions

This topic provides questions on astronomy, cosmology, and the physical universe. It covers subjects like the Hubble sequence, constellations, dark matter, and stellar evolution. These questions help build a strong foundation for general science exam sections.

Galaxies and clustersConstellations and starsStellar evolutionSpace observatories

Astronomy and Cosmology Questions

Multiple choice

What is the relationship between the parallax of a star and its distance?

  1. Parallax is directly proportional to distance

  2. Parallax is inversely proportional to distance

  3. Parallax is independent of distance

  4. Parallax is inversely proportional to the square of distance
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The parallax of a star is inversely proportional to its distance.

Multiple choice

What is the name of the instrument used to measure the positions of stars?

  1. Telescope

  2. Spectrograph

  3. Astrometer

  4. Photometer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An astrometer is an instrument used to measure the positions of stars.

Multiple choice

What is the name of the technique used to measure the proper motion of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Astrometry is the technique used to measure the proper motion of stars.

Multiple choice

What is the name of the technique used to measure the radial velocity of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Spectroscopy is the technique used to measure the radial velocity of stars.

Multiple choice

What is the name of the technique used to measure the distance to stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Astrometry is the technique used to measure the distance to stars.

Multiple choice

What is the name of the technique used to measure the mass of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Spectroscopy is the technique used to measure the mass of stars.

Multiple choice

What is the name of the technique used to measure the age of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photometry is the technique used to measure the age of stars.

Multiple choice

What is the name of the technique used to measure the metallicity of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Spectroscopy is the technique used to measure the metallicity of stars.

Multiple choice

What is the name of the technique used to measure the magnetic field of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Spectroscopy is the technique used to measure the magnetic field of stars.

Multiple choice

What is the name of the technique used to measure the rotation period of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photometry is the technique used to measure the rotation period of stars.

Multiple choice

What is the name of the technique used to measure the activity level of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photometry is the technique used to measure the activity level of stars.

Multiple choice

What is the name of the technique used to measure the binarity of stars?

  1. Astrometry

  2. Photometry

  3. Spectroscopy

  4. Radio astronomy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Astrometry is the technique used to measure the binarity of stars.

Multiple choice

What was the primary focus of M.K. Vainu Bappu's research on planetary nebulae?

  1. Their chemical composition

  2. Their physical properties

  3. Their relationship to stars

  4. Their astrological significance
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

M.K. Vainu Bappu's research on planetary nebulae focused on their physical properties, such as their temperature, density, and expansion velocities.

Multiple choice

What was the primary focus of Subrahmanyan Chandrasekhar's research on extragalactic nebulae?

  1. Their chemical composition

  2. Their physical properties

  3. Their relationship to stars

  4. Their astrological significance
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Subrahmanyan Chandrasekhar's research on extragalactic nebulae focused on their physical properties, such as their mass, luminosity, and structure.

Multiple choice

What was the primary focus of Harish-Chandra's research on the Magellanic Clouds?

  1. Their chemical composition

  2. Their physical properties

  3. Their relationship to stars

  4. Their astrological significance
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Harish-Chandra's research on the Magellanic Clouds focused on their physical properties, such as their mass, luminosity, and structure.