universe & solar system section 13 Practice Questions Answers Test with Solutions & More Shortcuts

Universe, solar system and Astronomy PRACTICE TEST [13 - EXERCISES]

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universe & solar system section 13

Question : 11 [IAS (Pre) 1996]

Consider the following statements.
A person in space craft situated at the mid of Earth and Sun will see that

  1. Sky is black.
  2. Stars do not twinkle.
  3. The temperature outside the space craft is more than that of Earth surface.
Which of the following is true?

a) 1 and 3

b) 1, 2 and 3

c) 1 and 2

d) Only 3

Discuss »

Answer: (c)

Question : 12 [CDS 2016-II]

Which of the following elements are found in highest and lowest quantities respectively in the crust of the earth?

a) Sodium and magnesium

b) Oxygen and magnesium

c) Calcium and sodium

d) Oxygen and silicon

Discuss »

Answer: (b)

Elements in the Earth’s crust -

  • Oxygen = 47%,
  • Silicon = 28%,
  • Calcium = 3.5%,
  • Sodium = 3% and
  • Magnesium = 2%

Question : 13

Who discovered the solar system?

a) Copernicus

b) Kepler

c) Newton

d) Aryabhatta

Discuss »

Answer: (a)

Copernicus discovered the solar system. Nicolaus Copernicus was a Renaissance mathematician and astronomer who formulated a heliocentric model of the universe which placed the Sun, rather than the Earth, at the center.

Question : 14 [SSC MTS 2013]

Which amidst the following planets has its orbit closest to Sun ?

a) Jupiter

b) Uranus

c) Mars

d) Venus

Discuss »

Answer: (d)

Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system’s brightest planet — yellow clouds of sulfuric acid reflect the sun’s light brightly and has its orbit closest to sun but only next to mercury.

Question : 15 [IAS (Pre) 2005]

Which of the following planets is the farthest planet of the Solar System?

a) Saturn

b) Mars

c) Earth

d) Neptune

Discuss »

Answer: (d)

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