universe & solar system section 9 MCQ Questions & Answers Detailed Explanation
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The following question based on Universe, solar system and Astronomy topic of indian geography mcq
Assertion (A):
The same face of the Moon is always presented to the Earth.
Reason (R):
The Moon rotates about its own axis in days which is about the same time that it takes to orbit the earth.
Codes:
(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.
The correct answers to the above question in:
Answer: (d)
The same side of the Moon is always faces the Earth because the Moon spins once on its axis in exactly the same amount of time that the Moon revolves around the Earth.
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Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which of the following is an alternative theory to the Big Bang theory developed in 1948, stating that the universe does not change even though it is expanding over time?
a) Mirror Universe
b) Eternal Inflation
c) Steady State Universe
d) Oscillating Universe
Answer »Answer: (c)
The Steady State theory (also known as the Infinite Universe theory or continuous creation) was developed in 1948 by Fred Hoyle, Thomas Gold, Hermann Bondi, and others as an alternative to the Big Bang theory.
In the steady-state theory, the density of matter in the expanding universe remains unchanged due to a continuous creation of matter. It asserts that the observable universe is basically the same at any time as well as at any place.
Question : 2
The longitude of a place is its
a) angular distance east or west of International Date Line
b) angular distance with respect to the pole star
c) angular distance north or south of the equator
d) angular distance east or west of the prime meridian
Answer »Answer: (d)
Question : 3
Which planet orbits closest to the earth?
a) Venus
b) Mercury
c) Jupiter
d) Mars
Answer »Answer: (a)
Venus orbits the Sun at an average distance of about 0.72 AU (108,000,000 km) and completes an orbit every 224.65 days.
Although all planetary orbits are elliptical, Venus's orbit is the closest to circular, with an eccentricity of less than 0.01.
Question : 4
The planet which is called twin sister of Earth is
a) Mars
b) Pluto
c) Venus
d) Mercury
Answer »Answer: (c)
Question : 5
The Earth distance becomes minimum from the sun?
a) 22nd March
b) 21st September
c) 4th July
d) 3rd January
Answer »Answer: (d)
The Earth shows minimum distance from the Sun on 3rd January.
Question : 6
Which one of the following is called terrestrial planet?
a) Mars
b) Saturn
c) Earth
d) Mercury
Answer »Answer: (d)
Mercury is called terrestrial planet. There are four terrestrial planets in our Solar System: Mercury, Venus, Earth, and Mars.
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
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