universe & solar system section 8 MCQ Questions & Answers Detailed Explanation
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The following question based on Universe, solar system and Astronomy topic of indian geography mcq
Moving from one place on Earth to another place of high latitude, the weight of an object decreases.
Reason (R):
Earth is not perfect sphere.
Choose the correct answer by using code given below.
(a) (A) is true, but (R) is wrong
(b) (A) is wrong, but (R) is true
(c) (A) and (R) both are true, but (R) does not explains (A) properly
(d) (A) and (R) both are true and (R) explains (A) properly
The correct answers to the above question in:
Answer: (b)
Discuss Form
Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which of the following is called the twin of the earth ?
a) Mars
b) Saturn
c) Venus
d) Neptune
Answer »Answer: (c)
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth’s twin.
However, surface conditions are not nearly the same making it a quite inhospitable environment.
Question : 2
The inexhaustible source of energy of the stars is due to
a) conversion of Helium to Hydrogen.
b) excess of oxygen that helps burning and release of energy.
c) conversion of Hydrogen to Helium.
d) decay of radioactive elements.
Answer »Answer: (c)
The inexhaustible source of energy of the stars is due to the conversion of Hydrogen to Helium. In the interior of a star, the particles move rapidly in every direction because of the high temperatures present. Every so often a proton moves close enough to a nucleus to be captured, and a nuclear reaction takes place.
Only protons of extremely high energy (many times the average energy in a star such as the Sun) are capable of producing nuclear events of this kind. A minimum temperature required for fusion is roughly 10 million K. Since the energies of protons are proportional to temperature, the rate of energy production rises steeply as temperature increases.
Question : 3
When any object is taken from the Earth to the Moon
a) There is no change in its weight
b) It becomes totally weightless
c) Its weight decreases
d) Its weight increases
Answer »Answer: (c)
Question : 4
Which of the following are true with respect to fold mountains?
- Their tops are often buried beneath snow and ice.
- They form rugged peaks.
- They are caused by contraction of the earth’s crust.
- They contain a core composed of metamorphic and igneous rocks.
a) 1 and 2
b) 1 and 4
c) 2, 3 and 4
d) 1, 3 and 4
Answer »Answer: (d)
Question : 5
Which is a celestial phenomenon occuring due to stars?
a) Rainbow
b) Comet
c) Black hole
d) Ozone hole
Answer »Answer: (c)
Question : 6
How much time does earth take in completing one rotation on its axis in relation to sun ?
a) 24 hours 4 minutes
b) 24 hours and 6 minutes
c) 23 hours 56 minutes
d) 24 hours
Answer »Answer: (d)
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
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universe & solar system section 13
Universe, solar system and Astronomy Shortcuts and Techniques with Examples
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