universe & solar system section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16

The average distance between the moon and the earth’s

a) 540,000 km

b) 576,000 km

c) 267,000 km

d) 384,000 km

Answer: (d)

Question : 17

The colour of the star is an indication of its

a) Temperature

b) Luminosity

c) Distance from the sun

d) Distance from the earth

Answer: (a)

The color of the star is an indication of its temperature. The glowing is caused by something called Black-Body radiation, which has to do with the heat energy trying to radiate away in more and more energetic wavelengths.

.Red stars are relatively cool at only a few thousand degrees Celsius, white stars are hot at about ten thousand degrees, and blue stars are the hottest.

Question : 18

Which one of the following statements is/ are correct with regard to Milky Way?

  1. It is a spiral galaxy.
  2. The solar system resides in one of its spiral arms.
Select the correct answer using the code given below:

a) Both 1 and 2

b) Neither 1 nor 2

c) 2 only

d) 1 only

Answer: (a)

The Milky Way glaxy is the home of our solar system.

It is very difficult to study this glaxy because the solar system is located within it. It seems to be a spiral glaxy.

Question : 19 [BPSC (Pre) 2000]

How many constellations are in our Space?

a) 89

b) 90

c) 88

d) 87

Answer: (c)

Question : 20 [PSC (Pre) 2017]

Assertion (A):
Artificial satellites are always launched from the Earth in the Eastward direction.
Reason (R):
The Earth rotates from West to East and so the satellite attains the escape velocity.
Code

a) (A) is true, but (R) is false

b) (A) is false, but (R) is true

c) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

d) Both (A) and (R) are true and (R) is the correct explanation of (A)

Answer: (b)

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958 Universe, solar system and Astronomy based indian geography mcq section 3 question answer with explanation pdf

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