One or two word answered-Questions
One Word Questions
(Answers are coloured Red)
1. A celestial object which does not twinkle in the night sky could be either a satellite or a comet or a planet.(S, III)
2. The moon is the brightest object in a clear night sky on days other than a no-moon day. (S, III)
3. The twinkling of stars in the night sky is due to the phenomenon of light called refraction of light.(S, II)
4. Guru Nanak’s birthday is celebrated on a Full Moon Day.(S, III)
5. The star nearest to the earth is Sun.
6. The second nearest star to us is Alpha Centauri.(S, III)
7. The Pole Star is the only star that does not appear to move at all in the sky.(S, III)
8. Constellations are stars forming a group that has a recognisable shape. (S, III)
9. The Sun is the only visible day time star (except during a solar eclipse with high occultation / except during a solar eclipse when almost the entire disc of the sun is covered by the moon).
10. Any Celestial body revolving around another celestial body is said to be its satellite.
11. The Earth is a satellite of the Sun.
12. The practice of astronomy in ancient India is mentioned in the Rig Veda, which was composed about 4000 years ago.
13. Mercury and Venus are the only two planets to have no natural satellites.
14. If you are 14 years old, how many times have you gone around the Sun? (Ans: 14 times)
15. The planet which has a reddish colour is Mars.
16. The four most prominent moons of Jupiter are called Galilean moons.(S, II)
17. Indian astronomers refer to Jupiter as Brihaspati.(S III)
18. Mangal is the planet Mars.(S III)
19. The planet Budh in Indian astronomy parlance in the planet Mercury.(S III)
20. The planet Saturn is known as Shani by Indian astronomers.(S III)
21. The planet that appears yellowish in colour is Saturn.(S III)
22. The letters A, B, C, D, E are associated with the planet Saturn.(S II)
23. The planet that appears to roll on its side as it rotates is Uranus. (S III)
24. Visible through large telescopes, a belt of large and small rocks rotating just outside the orbit of the inner planets are called the asteroids.(S, III)
25. There is a large gap between the orbits of Mars and Jupiter. This gap is occupied by the asteroids.(S, III)
26. Celestial objects with bright heads and long tails are comets.(S, III)
27. The terms “dust tail” and “ion tail” are used in the study of comets.(S, II)
28. Swarms of meteors seen at certain times of the year are referred to as meteor showers.(S, III)
29. Man-made objects that revolve around the earth or any other planet are called artificial satellites.(S, III)
30. The Indian satellite dedicated to the purpose of education is EDUSAT.
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