Universe: MCQs from 61 to 70

61. The light coming from stars gives the idea of their ______?

(a) Mass

(b) Size

(c) Rotation

(d) Temperature

62. The Milky-way galaxy extends through a distance of ______?

(a) 10 light years

(b) 15 light years

(c) 10⁵ light years

(d) 10¹⁰ light years

63. The period of one revolution of the Sun around the center of galaxy is known as ______?

(a) Light year

(b) Parsec

(c) Cosmic year

(d) Astronomical year

64. Super Nova is ______?

(a) A comet

(b) An asteroid

(c) A black hole

(d) A dying star

65. The altitude of heavenly bodies appear to be greater than they actually are. This is due to ______?

(a) These are visible because of light of the Sun reflected from their surface

(b) Vertical motion of these heavenly bodies

(c) Atmospheric refraction

(d) Motions of the Earth

66. Twelve constellations referred to as zodiac, are ______?

(a) Imaginary region that encompass the path of the planets

(b) Signs of Roman gods

(c) A group of stars

(d) None of the above

67. The term “meteor” is applied to an interplanetary body ______?

(a) Before it enters the Earth’s atmosphere

(b) After it enters the Earth’s atmosphere and explodes in midair as a ball of fire

(c) After it enters the atmosphere of the Earth

(d) After it enters the Earth’s atmosphere and lands on the surface of the Earth without exploding in mid-air

68. The time required by moonlight to reach the Earth is ______?

(a) 2.3 seconds

(b) 1.3 seconds

(c) 1 second

(d) 2 seconds

69. The temperature of Sun’s center is 15 million degree centigrade and the temperature of outer surface of the Sun is ______?

(a) 2000-4000 ⁰C

(b) 3000-4500 ⁰C

(c) 4500-5000 ⁰C

(d) 5500-6000 ⁰C

70. The shape of our milky-way galaxy is ______?

(a) Elliptical

(b) Circular

(c) Spiral

(d) None of the above