Physics · 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 geography constellations and galaxies constellation different constellations and galaxies milky way

Leaving the 3 middle stars apart, which shape is formed by the remaining 4 bright starts of the Orion? 

  1. Circle

  2. Irregular circle

  3. Triangle

  4. Quadrilateral
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Out of the 7 or 8 bright stars of the Orion, 3 form a straight line in the middle resembling the belt of the hunter and the other four form or five form the quadrilateral.

Multiple choice geography constellations and galaxies constellation different constellations and galaxies milky way

Which of the following are true for Cassiopeia?

  1. It appears in the northern sky.

  2. It has 5 prominent stars

  3. It is visible during winter at late night

  4. It looks like a distorted letter W or M
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
Explanation

Cassiopeia has 5 prominent stars that shine brightly and appear like a distorted letter W or M. It is visible in the northern sky during winters early in the night.

Multiple choice geography constellations and galaxies constellation different constellations and galaxies milky way

Only few stars of a constellation are clearly visible through naked eyes because:

  1. those are the prominent ones

  2. those are close to the Earth while others are far away

  3. others are covered by clouds

  4. others are a myth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Many stars form the constellation but only few of them shine brightly and can be seen through naked eyes clearly. These are the prominent stars of the constellation and those help in locating the constellation.

Multiple choice geography constellations and galaxies constellation different constellations and galaxies milky way

'X' is a group of stars visible during winter season in the late evening. It resembles a hunter in the kneeling position. What is 'X'?

  1. Ursa Major

  2. Orion

  3. Cassiopeia

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

Orion is another well-known constellation that can be seen during winter in the late evenings. It is one of the most magnificent constellations in the sky. It also has seven or eight bright stars. Orion is also called the Hunter.

Multiple choice geography constellations and galaxies constellation different constellations and galaxies milky way
Column-I Column-II
(1) Ursa Major (a) The queen
(2) Orion (b) Big bear
(3) Cassiopeia (c) Pole star constellation
(4) Ursa minor (d) Hunter
  1. (1) $\rightarrow$ b; (2) $\rightarrow$ d; (3) $\rightarrow$ c; (4) $\rightarrow$ a.
  2. (1) $\rightarrow$ b; (2) $\rightarrow$ a; (3) $\rightarrow$ d; (4) $\rightarrow$ c.
  3. (1) $\rightarrow$ c; (2) $\rightarrow$ d; (3) $\rightarrow$ a; (4) $\rightarrow$ b.
  4. (1) $\rightarrow$ b; (2) $\rightarrow$ d; (3) $\rightarrow$ a; (4) $\rightarrow$ c.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ursa major looks like a big bear.

Orion is named after a hunter of Greek.
Cassiopeia is named after vain queen of Greek mythology .
Ursa minor has pole star as its brightest star.

Multiple choice geography constellations and galaxies constellation different constellations and galaxies milky way

Fill in the blank:

The 3 middle stars in Orion represent the ________.

  1. belt of the bear

  2. belt of the hunter

  3. tail of the bear

  4. stick of the hunter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Constellations were phrased by ancient people to enable easy recognition of stars. Constellations resemble objects that were familiar to those people. Orion resembles the hunter, and the 3 middle stars of the constellation represent the belt of the hunter.

Multiple choice physics option c: imaging optical instruments : telescope the reflecting telescope optical telescope xx radio telescope and space telescopes

Scientists identify the elements that are burning in the stars by using which of the following devices?

  1. Refractive telescopes

  2. Reflective telescopes

  3. Spectroscopes

  4. Polarimeters

  5. Photoelectric mircoscopes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Using the spectroscope, scientists can separate the individual line spectra of the elements that are burning in the stars and therefore identify the elements.