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

Total Questions: 50

21. Almost 98% of Earth's crust is made up of eight elements. Which of the following does NOT figure among these elements? [S.S.C. Online CGL (T-I) 17.08.2021 (Shift-I)]

Correct Answer: (a) Carbon
Solution:

About 98 percent of the Earth's crust is made up of various elements, including. Elements (By Weight Percentage)

ElementApprox. % in CrustRemarks
Oxygen (O)~46.6%Most abundant element
Silicon (Si)~27.7%Forms silicate minerals with oxygen
Aluminium (Al)~8.1%Most abundant metal
Iron (Fe)~5.0%Found in minerals like magnetite
Calcium (Ca)~3.6%Found in rocks like limestone, gypsum
Sodium (Na)~2.8%Present in feldspar minerals
Potassium (K)~2.6%Found in mica and feldspar
Magnesium (Mg)~2.1%Found in olivine, pyroxene

Carbon is not included in the earth's crust.

22. What is the another name of Pole Star? [S.S.C. Online MTS (T-I) 3.10.2017 (Shift-II)]

Correct Answer: (d) North Star
Solution:The Pole Star is also called the North Star. It is the brightest star in the Ursa Minor constellation.

23. What is the most abundant metal in the Earth's crust? [S.S.C. Online MTS (T-I) 19.09.2017 (Shift-I)]

Correct Answer: (c) aluminium
Solution:The most abundant metal in the Earth's crust is aluminum. The most abundant elements in the Earth's crust are oxygen in the first place and silicon in the second place.

24. Objects that shine in the night sky are known as: [S.S.C. Online C.G.L. (T-I) 3 2020 (Shift-II)]

Correct Answer: (a) celestial bodies
Solution:Bodies that shine in the night sky are called celestial bodies. The Sun, Moon and all those objects which shine in the sky during the night are called celestial bodies.

25. Sun, Moon and all those objects which shine in the sky during the night are called, [S.S.C. Online MTS (T-I) 20.09.2017 (Shift-I)]

Correct Answer: (c) celestial body
Solution:Bodies that shine in the night sky are called celestial bodies. The Sun, Moon and all those objects which shine in the sky during the night are called celestial bodies.

26. The Pole Star indicates the direction to the _________. [S.S.C. Online MTS (T-I) 18.09.2017 (Shift-III)]

Correct Answer: (a) North
Solution:The Pole star is also called (Northern Hemisphere) North Star. It is the brightest star that appears nearest to either celestial pole at any particular time.

Owing to the precession of the equinoxes, the position of each pole describes a small circle in the sky over a period of 25,772 years. Each of a succession of stars has thus passed near enough to the north celestial pole to serve as the polestar.

27. What is the approximate distance (in million km) of the Sun from the Earth? [S.S.C. Online MTS (T-I) 19.09.2017 (Shift-I)]

Correct Answer: (a) 150
Solution:The distance of the Sun from the Earth is approximately 149.6 million km. Hence, the nearest correct answer would be an option (a).

28. Which is the nearest star to Earth? [S.S.C. Online MTS (T-I) 18.09.2017 (Shift-I)]

Correct Answer: (b) Sun
Solution:The closest star to the Earth is the Sun. Earth is a part of this solar system and revolves around the Sun.

29. The American scientist Edwin Hubble's name is associated with which of these theories? [S.S.C. Online C.G.L. (T-I) 4 2020 (Shift-III)]

Correct Answer: (b) The Big Bang Theory
Solution:

Edwin Hubble's name is associated with "The Big Bang Theory". This theory explains how our universe might have started in the first place.

What is the Big Bang Theory?
  • The Big Bang Theory is the most widely accepted explanation for the origin of the universe.
  • It states that the universe began as a very hot, dense point (singularity) about 13.8 billion years ago, and has been expanding ever since.

30. Lucifer is another name for the planet ____ . [S.S.C. Online C.G.L. (T-I) 3 2020 (Shift-III)]

Correct Answer: (b) Venus
Solution:

Lucifer means light-bringer in Latin.

  1. It is another name for the planet Venus.
  2. It is the hottest planet in the solar system.
  3. It is also known as "Earth's Twin" .
  4. It is the brightest planet in the solar system.
  5. It is also known as the "Evening star" and "Morning star" as it can be seen in the morning and evening with open yes.