Physics · Science General

Astronomy and Cosmology

4,450 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

'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.
Multiple choice evs - i our earth and our solar system asteroids, comets, and meteors and meteorites other objects in solar system asteroids, comets and meteors
The bright streaks of light seen occasionally in the sky are ________.

  1. planets

  2. satellites

  3. meteors

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

Meteors are small objects that sometimes enter the Earth"s atmosphere. However, due to the high speed of the meteor friction is created between its surface and Earth"s atmosphere causing it to heat up. Thus it glows and evaporates quickly and appears for a very short period of time as a bright streak of light.

Multiple choice evs - i our earth and our solar system asteroids, comets, and meteors and meteorites other objects in solar system asteroids, comets and meteors

Shooting stars are actually not meteors.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Despite its name, shooting stars are not actually stars. Shooting star is either a piece of a small rock or dust from space that heats up when is enters the Earth's atmosphere. Shooting stars are basically meteors.