Universe And Solar System (World Geography) (Part-1)

Total Questions: 50

11. IC 1101 is a ______ . [S.S.C. Online C.H.S.L. (T-I) 6.08.2021 (Shift-III)]

Correct Answer: (b) galaxy
Solution:IC 1101 is an elliptical galaxy. It was discovered by William Herschel in 1790 AD.

12. What do you call the point in the orbit of the moon or a satellite at which it is nearest to Earth? [S.S.C. Online C.H.S.L. (T-I) 04.08.2021 (Shift-II)]

Correct Answer: (b) Perigee
Solution:The orbit of the Moon or any satellite around the Earth is not entirely circular hut is ellipsoidal, due to which it is sometimes near to the Earth and sometimes far away. Therefore, the nearest point of the satellite to the earth is called perigee, while the farthest point is called apogee.

Apsis - Wikipedia

13. The motion of the earth in a fixed orbit around the sun is called ____ [S.S.C. Online MTS (T-I) 10.10.2017 (Shift-I)]

Correct Answer: (a) revolution
Solution:

What is Revolution?

  • Revolution is the movement of the Earth around the Sun in a fixed elliptical orbit.

Duration
  • One complete revolution takes approximately 365¼ days (365 days, 6 hours, 9 minutes).
  • To adjust this, we have a leap year every 4 years (with 366 days).

14. What fraction of Earth's diameter is the diameter of the moon? [S.S.C. Online MTS (T-I) 12.10.2017 (Shift-III)]

Correct Answer: (c) 1/4
Solution:About 1/4 of the diameter of the Earth is equal to the diameter of the Moon. The diameter of the earth is about 12742 km, While the diameter of the Moon is about 3475 km.

15. What are the small pieces of rocks which move around the sun is called? [S.S.C. Online MTS (T-I) 13.10.2017 (Shift-II)]

Correct Answer: (b) Meteoroids
Solution:

What is a Meteoroid?
  • A meteoroid is a small rocky or metallic body traveling through space.
  • Smaller than asteroids, usually ranging from grain-sized to a few meters wide.

Asteroids are found between Mars and Jupiter.

Important Facts
  • Meteoroids mostly come from asteroids or comets.
  • They travel at high speeds (11–72 km/s).
  • Most meteors burn up in the atmosphere due to friction.
  • Meteor showers occur when Earth passes through debris left by comets (e.g., Perseids, Leonids).
  • Largest known meteorite: Hoba Meteorite in Namibia (~60 tons).

16. How many brightest stars is the constellation called the Great Bear made up of? [S.S.C. Online C.G.L. (T-I) 24.08.2021 (Shift-I)]

Correct Answer: (d) Seven
Solution:The constellation, called the Great Bear, is made up of seven bright stars. It is part of the Ursa Major con- stellation. It is also called the "Saptarishi Planetarium"

17. What are the groups of stars that form patterns called? [S.S.C. Online MTS (T-I) 20.09.2017 (Shift-III)]

Correct Answer: (b) constellation
Solution:

What is a Constellation?
  • A constellation is a group of stars that form a recognizable pattern in the sky.
  • These patterns often represent mythological figures, animals, or objects.

According to the International Astronomical Union, there are a total of 88 constellations in the sky.

Famous Constellations
ConstellationShape/AssociationKey Star(s)
OrionHunterBetelgeuse, Rigel
Ursa MajorGreat Bear, Big DipperSeven bright stars (Saptarishi in India)
Ursa MinorLittle Bear, Little DipperPolaris (North Star)
CassiopeiaQueen on a throne (W-shape)Five-star W pattern
LeoLion (Zodiac sign)Regulus
TaurusBull (Zodiac sign)Aldebaran, Pleiades cluster
ScorpiusScorpion (Zodiac sign)Antares

18. Ursa Major or Big bear is an example of ______ . [S.S.C. Online MTS (T-I)16 2017 (Shift-III)]

Correct Answer: (a) Constellation
Solution:Ursa Major is a constellation in the sky. It is also called Great Bear. The Saptarishis are a group of seven stars, which are part of Ursa Major.

19. Which constellation is known as the 'Saptarishi'? [S.S.C. Online MTS (T-I) 21.09.2017 (Shift-II)]

Correct Answer: (a) Ursa Major
Solution:

In ancient Indian astronomy, the asterism of the Big Dipper is known as 'Saptarishi. It is part of the constellation of Ursa Major. The Ursa Major is also known as the Great Bear. The seven stars representing Saptarishi are

  1. Vashistha
  2. Marichi
  3. Pulastya
  4. Pulaha
  5. Atri
  6. Angiras
  7. Kratu

20. Ursa Major or Big Bear is a type of _______ . [S.S.C. Online MTS (T-I) 16.09.2017 (Shift-III)]

Correct Answer: (a) Constellation
Solution:Ursa Major, or the Great Bear, is a type of Constellation.