MCQs on Universe and Galaxy – Geography
Q1. What is the age of the Universe according to the Big Bang Theory?
a) 1 billion years
b) 5 billion years
c) 13.8 billion years
d) 20 billion years
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Correct Answer: c) 13.8 billion years
Explanation: The age of the Universe according to the Big Bang Theory is approximately 13.8 billion years.
Q2. Which galaxy does our Solar System belong to?
a) Andromeda
b) Triangulum
c) Milky Way
d) Whirlpool
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Correct Answer: c) Milky Way
Explanation: Our Solar System belongs to the Milky Way galaxy.
Q3. What is the largest known galaxy in the Universe?
a) Andromeda
b) Milky Way
c) IC 1101
d) Triangulum
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Correct Answer: c) IC 1101
Explanation: IC 1101 is the largest known galaxy in the Universe.
Q4. What is the most common type of galaxy in the Universe?
a) Spiral
b) Elliptical
c) Irregular
d) Lenticular
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Correct Answer: a) Spiral
Explanation: Spiral galaxies are the most common type of galaxy in the Universe.
Q5. What is the approximate diameter of the Milky Way galaxy?
a) 30,000 light-years
b) 100,000 light-years
c) 200,000 light-years
d) 500,000 light-years
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Correct Answer: b) 100,000 light-years
Explanation: The Milky Way galaxy has a diameter of approximately 100,000 light-years.
Q6. What is the name of the supermassive black hole at the center of the Milky Way galaxy?
a) Sagittarius A*
b) Cygnus X-1
c) M87*
d) Centaurus A
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Correct Answer: a) Sagittarius A*
Explanation: Sagittarius A* is the supermassive black hole at the center of the Milky Way galaxy.
Q7. Which of the following is NOT a type of galaxy?
a) Barred spiral
b) Elliptical
c) Nebula
d) Irregular
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Correct Answer: c) Nebula
Explanation: Nebula is not a type of galaxy; it is a cloud of gas and dust in space.
Q8. What is the estimated number of galaxies in the observable Universe?
a) 2 billion
b) 10 billion
c) 100 billion
d) 1 trillion
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Correct Answer: d) 1 trillion
Explanation: The estimated number of galaxies in the observable Universe is around 1 trillion.
Q9. is the name of the galaxy that is expected to collide with the Milky Way in the future?
a) Triangulum
b) Whirlpool
c) Andromeda
d) Sombrero
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Correct Answer: c) Andromeda
Explanation: The Andromeda galaxy is expected to collide with the Milky Way in the future.
Q10. What is the term used to describe the large-scale structure of the Universe, where galaxies are arranged in a network of filaments and voids?
a) Cosmic web
b) Galactic lattice
c) Universal grid
d) Space matrix
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Correct Answer: a) Cosmic web
Explanation: The term used to describe the large-scale structure of the Universe, where galaxies are arranged in a network of filaments and voids, is the cosmic web)
Q11. Which of the following is the closest galaxy to the Milky Way?
a) Andromeda
b) Triangulum
c) Canis Major Dwarf
d) Large Magellanic Cloud
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Correct Answer: c) Canis Major Dwarf
Explanation: The Canis Major Dwarf galaxy is the closest galaxy to the Milky Way.
Q12. What is the name of the group of galaxies that includes the Milky Way?
a) Virgo Cluster
b) Coma Cluster
c) Local Group
d) Fornax Cluster
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Correct Answer: c) Local Group
Explanation: The Milky Way is part of the Local Group of galaxies.
Q13. What is the term used to describe the expansion of the Universe?
a) Cosmic inflation
b) Hubble expansion
c) Universal stretch
d) Galactic dispersion
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Correct Answer: b) Hubble expansion
Explanation: The term used to describe the expansion of the Universe is Hubble expansion.
Q14. What is the name of the telescope that has provided valuable information about distant galaxies and the expansion of the Universe?
a) Hubble Space Telescope
b) Kepler Space Telescope
c) Spitzer Space Telescope
d) Chandra X-ray Observatory
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Correct Answer: a) Hubble Space Telescope
Explanation: The Hubble Space Telescope has provided valuable information about distant galaxies and the expansion of the Universe.
Q15. What is the term used to describe the mysterious force that is causing the expansion of the Universe to accelerate?
a) Dark energy
b) Dark matter
c) Cosmic force
d) Gravitational push
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Correct Answer: a) Dark energy
Explanation: Dark energy is the term used to describe the mysterious force that is causing the expansion of the Universe to accelerate.
Q16. What is the term used to describe the invisible substance that makes up a significant portion of the Universe’s mass?
a) Dark energy
b) Dark matter
c) Cosmic dust
d) Neutrino mass
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Correct Answer: b) Dark matter
Explanation: Dark matter is the term used to describe the invisible substance that makes up a significant portion of the Universe’s mass.
Q17. What is the name of the satellite that has provided detailed maps of the cosmic microwave background radiation?
a) COBE
b) WMAP
c) Planck
d) All of the above
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Correct Answer: d) All of the above
Explanation: COBE, WMAP, and Planck are all satellites that have provided detailed maps of the cosmic microwave background radiation
Q18. What is the term used to describe the boundary beyond which we cannot observe anything in the Universe due to the expansion of space?
a) Cosmic horizon
b) Observable limit
c) Hubble boundary
d) Event horizon
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Correct Answer: a) Cosmic horizon
Explanation: The term used to describe the boundary beyond which we cannot observe anything in the Universe due to the expansion of space is the cosmic horizon.
Q19. What is the name of the largest known structure in the Universe, consisting of a group of galaxy clusters?
a) Hercules-Corona Borealis Great Wall
b) Sloan Great Wall
c) Coma Supercluster
d) Virgo Supercluster
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Correct Answer: a) Hercules-Corona Borealis Great Wall
Explanation: The Hercules-Corona Borealis Great Wall is the largest known structure in the Universe, consisting of a group of galaxy clusters.
Q20. What is the term used to describe the point in time when the first galaxies began to form?
a) Cosmic dawn
b) Galactic genesis
c) Universal birth
d) Starlight inception
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Correct Answer: a) Cosmic dawn
Explanation: The term used to describe the point in time when the first galaxies began to form is the cosmic dawn.