universe & solar system section 10 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) rapidly spinning stars
(b) high temperature stars
(c) stars moving away from Earth
(d) stars moving towards the Earth
The correct answers to the above question in:
Answer: (a)
The word “pulsar” is a contraction of “pulsating star. A pulsar is formed when a massive star collapse exhausts its supply of fuel. It blasts out in a giant explosion known as a supernova, the most powerful and violent event in the universe.
Without the opposing force of nuclear fusion to balance it, gravity begins to pull the mass of the star inward until it implodes.
In a pulsar, gravity compacts the mass of the star until it forms an object composed primarily of neutrons packed so tightly that they no longer exist as normal matter.
As the star collapses, it begins to spin more rapidly in what is known as the conservation of angular momentum. The process is similar to that of an ice skater pulling their arms in close to spin faster. What is left behind is a rapidly spinning ball of tightly packed neutrons inside an iron shell.
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Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which of the following stars is also known as Pulsar?
a) Neutron Star
b) Massive Star
c) White Dwarf
d) Red Giant
Answer »Answer: (a)
Neutron star is also known as Pulsar. A neutron star is a type of stellar remnant that can result from the gravitational collapse of a massive star.
Question : 2
Greenwich mean time is ––––––––––– IST.
a) 4.5 hours behind
b) 5.5 hours behind
c) 12 hours ahead
d) 5.5 hours ahead
Answer »Answer: (b)
Question : 3
A nautical mile is equal to
a) 6060 feet
b) 6080 feet
c) 5280 feet
d) 5060 feet
Answer »Answer: (b)
A nautical mile is based on the circumference of the planet Earth. If you were to cut the Earth in half at the equator, you could pick up one of the halves and look at the equator as a circle. You could divide that circle into 360 degrees.
You could then divide a degree into 60 minutes. A minute of arc on the planet Earth is 1 nautical mile. A nautical mile is1.1508 miles or 6,076 feet.
Question : 4
A group of stars arranged in a particular shape, is called
a) Andromeda
b) Solar system
c) Constellation
d) Milky Way
Answer »Answer: (c)
Question : 5
Cycle of sun spots is
a) 11 years
b) 12 years
c) 10 years
d) 9 years
Answer »Answer: (a)
Question : 6
The shortest route between two places is along the
a) rivers
b) direction of winds
c) longitudes
d) latitudes
Answer »Answer: (c)
The shortest ditance between two places on the earth surface is along the Great Circles. The property of a great circle is that a plane passed along it passes through the centre of the earth and divides it into two equal parts or hemispheres. Among the latitudes only the equator is a great circle while among longitudes all of them are great circles.
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
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Universe, solar system and Astronomy Shortcuts and Techniques with Examples
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