universe & solar system section 8 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 : 21

The mean radius of the Earth is

a) 8400 km

b) 12800 km

c) 6400 km

d) 3200 km

Discuss »

Answer: (c)

The mean radius of Earth is 6371 km or approximately a 6400 km

Question : 22 [BPSC (Pre) 2000]

Which planet is known as the ‘Evening Star’?

a) Venus

b) Saturn

c) Jupiter

d) Mars

Discuss »

Answer: (a)

Question : 23

Which planet is surrounded by a ring?

a) Venus

b) Earth

c) Mars

d) Saturn

Discuss »

Answer: (d)

Saturn is surrounded by a ring. Saturn has a ring around it because it is believed to be very big and has lots of moons, meaning it has a strong pull of gravity.

Another major reason is that the asteroids fling into their orbit and the rings are not solid.

Question : 24

Which of the following statements with regard to the term ‘great circle’ is not correct?

a) Only one great circle can be drawn on a sphere.

b) A great circle results when a plane passes through the centre of a sphere.

c) A ship can save fuel and time by following the great circle arc between two points.

d) Equator is a great circle.

Discuss »

Answer: (a)

Question : 25 [BPSC (Pre) 2001]

Approximately, how much distance per minute does Earth cover while revolving?

a) 69 km

b) 28 km

c) 59 km

d) 49 km

Discuss »

Answer: (b)

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