universe & solar system section 9 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 : 16

Which planet was named after the Roman God Zeus?

a) Venus

b) Jupiter

c) Mars

d) Earth

Discuss »

Answer: (b)

Jupiter was named after the Roman God Zeus. Zeus is the “Father of Gods and men” who rules the Olympians of Mount Olympus as a father rules the family according to the ancient Greek religion.

He is the God of sky and thunder in Greek mythology. Zeus is etymologically cognate with and, under the Hellenic influence, became particularly closely identified with Roman Jupiter.

Question : 17 [PCS (Pre) 2008]

Phoenix Mars Lander landed on the surface of Mars on

a) 26 June, 2008

b) 26 May, 2008

c) 27 May, 2008

d) 27 June, 2008

Discuss »

Answer: (b)

Question : 18

Two planets which have no satellites

a) Mercury and Mars

b) Venus and Mars

c) Mercury and Venus

d) Earth and Uranus

Discuss »

Answer: (c)

Question : 19

The inexhaustible source of energy of the stars is due to

a) conversion of Helium to Hydrogen.

b) excess of oxygen that helps burning and release of energy.

c) conversion of Hydrogen to Helium.

d) decay of radioactive elements.

Discuss »

Answer: (c)

The inexhaustible source of energy of the stars is due to the conversion of Hydrogen to Helium. In the interior of a star, the particles move rapidly in every direction because of the high temperatures present.

Every so often a proton moves close enough to a nucleus to be captured, and a nuclear reaction takes place. Only protons of extremely high energy (many times the average energy in a star such as the Sun) are capable of producing nuclear events of this kind. The minimum temperature required for fusion is roughly 10 million K.

Since the energies of protons are proportional to temperature, the rate of energy production rises steeply as temperature increases.

Question : 20

The latitude is the angular distance of a point on the earth’s surface with respect to the

a) Pole star

b) Tropic of Cancer

c) Prime meridian

d) Equator

Discuss »

Answer: (d)

Latitude is distance North or south of the equator. It may also be defined as an angle which ranges from 0° at the equator to 90° at the poles.

IMPORTANT indian geography mcq EXERCISES

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