universe & solar system section 4 MCQ Questions & Answers Detailed Explanation
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The following question based on Universe, solar system and Astronomy topic of indian geography mcq
(a) 1/51
(b) 1/8
(c) 1/81
(d) 1/49
The correct answers to the above question in:
Answer: (c)
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Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which of the following statement(s) is/are true?
- A planet is a celestial body that orbits a star and may or may not be a star itself
- A planet has sufficient mass for self gravity and is roughly spherical in shape
- A planet is formed out of fragments of rocks and metal leftovers is our solar system
- Pluto is the smaller planet of our solar system
a) 2 and 4
b) 2, 3 and 4
c) 2 only
d) 1 and 2
Answer »Answer: (d)
The definition of a planet was revised again in 2006. According to NASA, the International Astronomical Union (IAU) most recently defines a planet as a celestial body that:
- Is in orbit around a star, but is not itself a satellite.
- Has sufficient mass so it is nearly spherical in shape.
- Has cleared the neighborhood around its orbit.
Question : 2
Consider the following two statements, one labelled as the Assertion (A) and other as Reason (R). Examine these two statements carefully and select the correct answer by using the codes given below:
Assertion (A):
The planet Neptune appears blue in colour.
Reason (R):
The presence of Methane gas in the atmosphere of Neptune is responsible for its colour.
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.
Answer »Answer: (d)
Neptune’s atmosphere is made up of hydrogen, helium and methane. The methane in Neptune’s upper atmosphere absorbs the red light from the sun but reflects the blue light from the Sun back into space. This is why Neptune appears blue.
Question : 3
Earthquakes are important in landform studies because they can trigger catastrophic events like
- Landslides and mudflows
- Glacier surges
- Tsunamis causing damage and shoreline changes.
a) 1 and 2
b) 1 and 3
c) 3 only
d) 1, 2 and 3
Answer »Answer: (d)
Question : 4
The last stage in the life cycle of a star is
a) Red Giant
b) White Dwarf
c) Supernova
d) Black Hole
Answer »Answer: (b)
The last stage in the life circle of a star is white dwarf. Small stars, like the Sun, will undergo a relatively peaceful and beautiful death that sees them pass through a planetary nebula phase to become a white dwarf.
Question : 5
The Earth becomes minimum distance 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
Consider the following statements:
- Our solar system is located in the orion arm of the Milky way galaxy, about two-third of the way out from the centre.
- The solar system formed from an interstellar cloud of dust and gas or nebulla about 4.6 billion years ago.
a) Both 1 and 2
b) Neither 1 nor 2
c) 2 only
d) 1 only
Answer »Answer: (a)
Our solar system is located in the Orion arm of the milky way galaxy, about two-thirds of the way out from the center. The sun is about 26,000 light-years from the center of the Milky Way Galaxy, which is about 80,000 to 120,000 light-years across (and less than 7,000 light-years thick).
We are located on one of its spiral arms, out towards the edge. It takes the sun (and our solar system) roughly 200-250 million years to orbit once around the Milky Way. In this orbit, we (and the rest of the Solar System) are traveling at a velocity of about 155 miles/sec (250 km/sec).
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
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universe & solar system section 4
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universe & solar system section 13
Universe, solar system and Astronomy Shortcuts and Techniques with Examples
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