Universe And Solar System (Part – 2)

Total Questions: 50

41. Why Earth is called the blue planet? [S.S.C. Online MTS (T-I) 9.10.2017 (Shift-I)]

(a) Because of two-thirds surface covered by water
(b) Because of water laden clouds in the atmosphere
(c) Because of pollution in the atmosphere
(d) None of these

Correct Answer: (a) Because of two-thirds surface covered by water

Solution:Earth is also known as the Blue Planet because of the abundance of water on the surface of the Earth. About 70 percent of the Earth's area is covered by water, while 30 percent is land area.

42. Who was the first to measure the circumference of earth? [S.S.C. Online CHSL (T-I) 25.01.2017(Shift-III)]

(a) Erechtheus
(b) Aegeus
(c) Eratosthenes
(d) Apheidas

Correct Answer: (c) Eratosthenes

Solution:The Greek astronomer Eratosthenes was the first to calculate the exact measurement of the circumference of the Earth.

How He Measured It:

He observed that in Syene (now Aswan, Egypt), the Sun was directly overhead at noon on the summer solstice.
At the same time in Alexandria, he noticed a shadow was cast.
He measured the angle of the shadow (~7.2°) and used simple geometry.
Knowing the distance between the two cities, he calculated Earth’s circumference to be about 40,000 km – amazingly close to modern measurements!

43. The outermost layer of Earth is called ___ [S.S.C. Online CHSL (T-I) 7.02.2017(Shift-III)]

(a) Sphere
(b) Crust
(c) Mantle
(d) Core

Correct Answer: (b) Crust

Solution:The outermost layer of the earth is called the crust.

The Earth is divided into three layers

the crust,
the mantle,
and the core.

Layers of the Earth – Easy Peasy All-in-One Homeschool

44. Which zone separates the crust and mantle? [S.S.C. Online CHSL (T-I) 19.03.(Shift-I)]

(a) Moho
(b) Lithosphere
(c) Stratosphere
(d) Asthenosphere

Correct Answer: (a) Moho

Solution:The Moho region separates the crust and mantle. The Earth's crust is the uppermost layer while the mantle extends from the Moho to the Gutenberg discontinuity at a depth of 2,890 km.

Discontinuities Inside the Earth | Rashid's Blog: Portal for Inquisitive Learners

45. Triton is the moon of which planet? [S.S.C. Online CHSL (T-I) 2.02.2017(Shift-I)]

(a) Neptune
(b) Uranus
(c) Saturn
(d) Venus

Correct Answer: (a) Neptune

Solution:Triton is the largest natural satellite of the planet Neptune.

Key Facts about Triton:

Discovered in: 1846 by William Lassell, just weeks after Neptune was discovered
Unique orbit: It orbits Neptune in the opposite direction of the planet’s rotation (a retrograde orbit), suggesting it may have been captured from the Kuiper Belt
Surface: Covered with ice and frozen nitrogen, with geysers that may erupt liquid nitrogen
Only large moon in the solar system with a retrograde orbit

46. Which of the following is the largest satellite of the Solar System? [S.S.C. Online CHSL (T-I)7 2018 (Shift-II)]

(a) Titan
(b) Ganymede
(c) Moon
(d) Triton

Correct Answer: (b) Ganymede

Solution:Ganymede is the largest satellite in the Solar System. It is a satellite of Jupiter

47. Ganymede is by far the largest moon in our solar system orbits around the planet . [S.S.C. Online Constable GD 3.03.2019 (Shift-I)]

(a) Saturn
(b) Jupiter
(c) Neptune
(d) Urumus

Correct Answer: (b) Jupiter

Solution:Ganymede is by far the largest moon in our solar system orbits around the planet Jupiter.

Key Facts about Ganymede:

Planet: Jupiter
Diameter: About 5,268 km (3,273 miles)
Larger than: Mercury and Pluto
Surface: Has ice, possible subsurface ocean
Discovered by: Galileo Galilei in 1610
Special Feature: It has its own magnetic field, the only moon known to have one.

48. In terms of size, Neptune ranks no.________ in our solar system. [S.S.C. Online CHSL (T-I) 22.01.2017(Shift-III)]

(a) 1
(b) 2
(c) 3
(d) 4

Correct Answer: (d) 4

Solution:In terms of size, Neptune ranks no. 4th in our solar system.

Planets Ranked by Size (Diameter):

Rank	Planet	Diameter (approx.)
1	Jupiter	142,984 km
2	Saturn	120,536 km
3	Uranus	51,118 km
4	Neptune	49,528 km
5	Earth	12,756 km
6	Venus	12,104 km
7	Mars	6,792 km
8	Mercury	4,879 km

Notes:

Jupiter is the largest planet — a gas giant.
Mercury is the smallest — a rocky planet.
Earth is the largest of the terrestrial (rocky) planets.

49. In terms of size, Venus ranks no. ________in our solar system. [S.S.C. Online CHSL (T-I) 25.01.2017(Shift-III)]

(a) 5
(b) 6
(c) 7
(d) 8

Correct Answer: (b) 6

Solution:In terms of size, Venus ranks no. 6th in our solar system.

Planets Ranked by Size (Diameter):

Rank	Planet	Diameter (approx.)
1	Jupiter	142,984 km
2	Saturn	120,536 km
3	Uranus	51,118 km
4	Neptune	49,528 km
5	Earth	12,756 km
6	Venus	12,104 km
7	Mars	6,792 km
8	Mercury	4,879 km

Notes:

Jupiter is the largest planet — a gas giant.
Mercury is the smallest — a rocky planet.
Earth is the largest of the terrestrial (rocky) planets.

50. In terms of size, saturn ranks no. ________ in our solar system. [S.S.C. Online CHSL (T-I)19.01.2017(Shift-I)]

(a)1
(b) 2
(c) 3
(d) 4

Correct Answer: (b) 2

Solution:In terms of size, Saturn ranks no. 2nd in our solar system.

Planets Ranked by Size (Diameter):

Rank	Planet	Diameter (approx.)
1	Jupiter	142,984 km
2	Saturn	120,536 km
3	Uranus	51,118 km
4	Neptune	49,528 km
5	Earth	12,756 km
6	Venus	12,104 km
7	Mars	6,792 km
8	Mercury	4,879 km

Notes:

Jupiter is the largest planet — a gas giant.
Mercury is the smallest — a rocky planet.
Earth is the largest of the terrestrial (rocky) planets.

« Previous 1 2 3 45

Universe And Solar System (Part – 2)

41. Why Earth is called the blue planet? [S.S.C. Online MTS (T-I) 9.10.2017 (Shift-I)]

42. Who was the first to measure the circumference of earth? [S.S.C. Online CHSL (T-I) 25.01.2017(Shift-III)]

How He Measured It:

43. The outermost layer of Earth is called ___ [S.S.C. Online CHSL (T-I) 7.02.2017(Shift-III)]

44. Which zone separates the crust and mantle? [S.S.C. Online CHSL (T-I) 19.03.(Shift-I)]

45. Triton is the moon of which planet? [S.S.C. Online CHSL (T-I) 2.02.2017(Shift-I)]

Key Facts about Triton:

46. Which of the following is the largest satellite of the Solar System? [S.S.C. Online CHSL (T-I)7 2018 (Shift-II)]

47. Ganymede is by far the largest moon in our solar system orbits around the planet . [S.S.C. Online Constable GD 3.03.2019 (Shift-I)]

Key Facts about Ganymede:

48. In terms of size, Neptune ranks no.________ in our solar system. [S.S.C. Online CHSL (T-I) 22.01.2017(Shift-III)]

Planets Ranked by Size (Diameter):

Notes:

49. In terms of size, Venus ranks no. ________in our solar system. [S.S.C. Online CHSL (T-I) 25.01.2017(Shift-III)]

Planets Ranked by Size (Diameter):

Notes:

50. In terms of size, saturn ranks no. ________ in our solar system. [S.S.C. Online CHSL (T-I)19.01.2017(Shift-I)]

Planets Ranked by Size (Diameter):

Notes:

Related Posts