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Showing 31-40 of 50 results

1. The rotation of the Earth causes?

(A) Tides
(B) Daysand Nights
(C) Solar Eclipse
(D) Lunar Eclipse
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3. The time taken by the Earth to rotate once about its axis is called?

(A) Sidereal day
(B) Solar day
(C) Mean solar day
(D) Mean sidereal day
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4. The time we follow in our watches is?

(A) sidereal time
(B) apparent solar time
(C) Astronomical mean time (Based on the motion of an imaginary Sun who moves with uniform speed)
(D) none
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5. The calendar is based on the?

(A) Solar year
(B) Sidereal year
(C) Tropical year
(D) Civil year
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6. The innermost planet in the Solar System is?

(A) Venus
(B) Mars
(C) Pluto
(D) Mercury
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7. Which of the following types of motion of the Earth has not produced any observable effect for centuries?

(A) Its motion in space along with the Sun and other members of the Solar System
(B) Its daily rotation on its axis
(C) Its annual revolution around the Sun
(D) Its precession (or conical motion on its axis)
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10. Which of the following statements about the Sun in the celestial sphere or its role in the Solar System is not correct?

(A) It is a medium-sized star of average brightness among millions of other stars
(B) It revolves round the nine planets in the Solar System
(C) The motion of all the members of the Solar System is governed mainly by the gravitational forc
(D) All the above statements are correct
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