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

Total Questions: 50

31. Planetary scientists call the thin gaseous envelope around the Moon as the __ . [S.S.C. Online C.G.L. (T-I) 4 2020 (Shift-I)]

Correct Answer: (c) lunar exosphere
Solution:Planetary scientists call the thin gaseous envelope around the Moon as the 'Lunar exosphere'. Here, molecules in the air are so few and far between, they rarely come into contact with one another. Still, the gasses found around the Moon affects on conditions near the surface.

32. What is the other name for 'Orion Constellation'? [S.S.C. Online C.G.L. (T-I) 13.06.2019(Shift-I)]

Correct Answer: (d) Hunter
Solution:

The Orion constellation is also called Hunter. The three major stars in it resemble the Orion belt, while Betelgeuse, the second brightest star in the constellation, forms Hunter's shoulder.

33. Which one of the following is the largest recognised constellation? [S.S.C. Online C.G.L. (T-I) 13.06.2019 (Shift-I)]

Correct Answer: (d) hydra
Solution:The Hydra constellation is the largest of the current 88 constellations in the sky.

34. The term 'Blood Moon' is used to refer to __ . [S.S.C. Online C.G.L. (T-I) 12.06.2019(Shift-II)]

Correct Answer: (b) Lunar Eclipse
Solution:The term 'Blood Moon' is refers to Lunar Eclipse since the moon takes on a reddish tinge when it is fully eclipsed. A lunar eclipse occurs when the moon travels through the umbra of the earth and blocks all direct sunlight.

35. About 70% of the sun is made up of [S.S.C. Online C.G.L. (T-I) 11.06.2019(Shift-III)]

Correct Answer: (d) Hydrogen
Solution:The Sun is the hottest glowing sphere of Plasma at the centre of the solar system. It is made of gasses and most of it is hydrogen (about 70%) and helium  (about 28%).

While carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of  elements like neon, iron, silicon, magnesium and sulfur.

36. Which one of the following is the brightest star in the Orion Constellation? [S.S.C. Online C.G.L. (T-I) 10.06.2019(Shift-II)]

Correct Answer: (d) Rigel
Solution:The brightest star in the Orion constellation is Rigel . The Rigel star is a blue supergiant. It is at a distance of about 870 light years from the Sun.

37. On which of the following planet NASA sent the curiosity rover? [S.S.C. Online MTS (T-I) 6.08.2019 (Shift-I)]

Correct Answer: (c) Mars
Solution:NASA has sent the Curiosity rover to Mars. This rover was launched by NASA in November 2011.

38. A body of frozen gases, rock and dust traveling in an elongated orbit around the Sun is called: [S.S.C. JE Mechanical Exams 27.10.2020 (Shift-II)]

Correct Answer: (b) Comet
Solution:A body of frozen gasses, rock, and dust traveling in an elongated orbit around the Sun is called a comet. When a comet's orbit comes close to the sun, the ice in its central nucleus turns into gas that shoots out of the comet's sunlit side, carried by the solar wind outward to form a long tail.

39. A huge collection of gas, dust and billions of stars is called as: [S.S.C. JE Mechanical Exams 27.10.2020 (Shift-II)]

Correct Answer: (b) Galaxy
Solution:A huge collection of gas, dust and billions of stars is called a galaxy. Our solar system is part of the milky way galaxy. Millions of galaxies together make up the universe.

40. What is the radius of the moon? [S.S.C. Online CHSL (T-I) 19.03.2020 (Shift-I)]

Correct Answer: (d) 1.74 x 10⁶m
Solution:The radius of the moon is 1737.1 km or 1.74 x 10⁶m