Universe Questions and Answers – Page 2

Correct Answer: Option B — Crab Nebula. Crab Nebula is correct because it is located in the constellation Taurus. It is also associated with associated with a supernova observed in 1054 CE. Together, these two facts identify Crab Nebula precisely within Universe. Why the other options are incorrect: Option A — Black hole: Black hole is often formed from the collapse of a massive star. It is also associated with its boundary is called the event horizon, so these facts identify Black hole rather than Crab Nebula. Option C — Light-year: Light-year is used for distances between stars and galaxies. It is also associated with the distance light travels in one year, so these facts identify Light-year rather than Crab Nebula. Option D — Milky Way: Milky Way is the galaxy containing the Solar System. It is also associated with Sagittarius A* lies at its centre, so these facts identify Milky Way rather than Crab Nebula. Exam Takeaway: Link Crab Nebula with “located in the constellation Taurus” and “associated with a supernova observed in 1054 CE” for quick revision.

Correct Answer: Option A — Crab Nebula. Crab Nebula is correct because it is a supernova remnant. It is also associated with located in the constellation Taurus. Together, these two facts identify Crab Nebula precisely within Universe. Why the other options are incorrect: Option B — Black hole: Black hole is a region where escape velocity exceeds the speed of light. It is also associated with often formed from the collapse of a massive star, so these facts identify Black hole rather than Crab Nebula. Option C — Light-year: Light-year is a unit of distance. It is also associated with used for distances between stars and galaxies, so these facts identify Light-year rather than Crab Nebula. Option D — Milky Way: Milky Way is a barred spiral galaxy. It is also associated with the galaxy containing the Solar System, so these facts identify Milky Way rather than Crab Nebula. Exam Takeaway: Link Crab Nebula with “a supernova remnant” and “located in the constellation Taurus” for quick revision.

Correct Answer: Option D — Betelgeuse. Betelgeuse is correct because it is it is a variable star nearing a late evolutionary stage. It is also associated with a red supergiant star. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option A — Crab Nebula: Crab Nebula is it contains the Crab Pulsar. It is also associated with a supernova remnant, so these facts identify Crab Nebula rather than Betelgeuse. Option B — Black hole: Black hole is its gravity strongly bends spacetime. It is also associated with a region where escape velocity exceeds the speed of light, so these facts identify Black hole rather than Betelgeuse. Option C — Light-year: Light-year is approximately 9.46 trillion kilometres. It is also associated with a unit of distance, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “it is a variable star nearing a late evolutionary stage” and “a red supergiant star” for quick revision.

Correct Answer: Option C — Betelgeuse. Betelgeuse is correct because it is it marks one shoulder of Orion. It is also associated with it is a variable star nearing a late evolutionary stage. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option A — Crab Nebula: Crab Nebula is associated with a supernova observed in 1054 CE. It is also associated with it contains the Crab Pulsar, so these facts identify Crab Nebula rather than Betelgeuse. Option B — Black hole: Black hole is its boundary is called the event horizon. It is also associated with its gravity strongly bends spacetime, so these facts identify Black hole rather than Betelgeuse. Option D — Light-year: Light-year is the distance light travels in one year. It is also associated with approximately 9.46 trillion kilometres, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “it marks one shoulder of Orion” and “it is a variable star nearing a late evolutionary stage” for quick revision.

Correct Answer: Option B — Betelgeuse. Betelgeuse is correct because it is located in the constellation Orion. It is also associated with it marks one shoulder of Orion. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option A — Crab Nebula: Crab Nebula is located in the constellation Taurus. It is also associated with associated with a supernova observed in 1054 CE, so these facts identify Crab Nebula rather than Betelgeuse. Option C — Black hole: Black hole is often formed from the collapse of a massive star. It is also associated with its boundary is called the event horizon, so these facts identify Black hole rather than Betelgeuse. Option D — Light-year: Light-year is used for distances between stars and galaxies. It is also associated with the distance light travels in one year, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “located in the constellation Orion” and “it marks one shoulder of Orion” for quick revision.

Correct Answer: Option A — Betelgeuse. Betelgeuse is correct because it is a red supergiant star. It is also associated with located in the constellation Orion. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option B — Crab Nebula: Crab Nebula is a supernova remnant. It is also associated with located in the constellation Taurus, so these facts identify Crab Nebula rather than Betelgeuse. Option C — Black hole: Black hole is a region where escape velocity exceeds the speed of light. It is also associated with often formed from the collapse of a massive star, so these facts identify Black hole rather than Betelgeuse. Option D — Light-year: Light-year is a unit of distance. It is also associated with used for distances between stars and galaxies, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “a red supergiant star” and “located in the constellation Orion” for quick revision.

Correct Answer: Option D — Polaris. Polaris is correct because it is it lies close to the north celestial pole. It is also associated with a Cepheid variable star. Together, these two facts identify Polaris precisely within Universe. Why the other options are incorrect: Option A — Betelgeuse: Betelgeuse is it is a variable star nearing a late evolutionary stage. It is also associated with a red supergiant star, so these facts identify Betelgeuse rather than Polaris. Option B — Crab Nebula: Crab Nebula is it contains the Crab Pulsar. It is also associated with a supernova remnant, so these facts identify Crab Nebula rather than Polaris. Option C — Black hole: Black hole is its gravity strongly bends spacetime. It is also associated with a region where escape velocity exceeds the speed of light, so these facts identify Black hole rather than Polaris. Exam Takeaway: Link Polaris with “it lies close to the north celestial pole” and “a Cepheid variable star” for quick revision.

Correct Answer: Option C — Polaris. Polaris is correct because it is commonly called the North Star. It is also associated with it lies close to the north celestial pole. Together, these two facts identify Polaris precisely within Universe. Why the other options are incorrect: Option A — Betelgeuse: Betelgeuse is it marks one shoulder of Orion. It is also associated with it is a variable star nearing a late evolutionary stage, so these facts identify Betelgeuse rather than Polaris. Option B — Crab Nebula: Crab Nebula is associated with a supernova observed in 1054 CE. It is also associated with it contains the Crab Pulsar, so these facts identify Crab Nebula rather than Polaris. Option D — Black hole: Black hole is its boundary is called the event horizon. It is also associated with its gravity strongly bends spacetime, so these facts identify Black hole rather than Polaris. Exam Takeaway: Link Polaris with “commonly called the North Star” and “it lies close to the north celestial pole” for quick revision.

Correct Answer: Option B — Polaris. Polaris is correct because it is located in Ursa Minor. It is also associated with commonly called the North Star. Together, these two facts identify Polaris precisely within Universe. Why the other options are incorrect: Option A — Betelgeuse: Betelgeuse is located in the constellation Orion. It is also associated with it marks one shoulder of Orion, so these facts identify Betelgeuse rather than Polaris. Option C — Crab Nebula: Crab Nebula is located in the constellation Taurus. It is also associated with associated with a supernova observed in 1054 CE, so these facts identify Crab Nebula rather than Polaris. Option D — Black hole: Black hole is often formed from the collapse of a massive star. It is also associated with its boundary is called the event horizon, so these facts identify Black hole rather than Polaris. Exam Takeaway: Link Polaris with “located in Ursa Minor” and “commonly called the North Star” for quick revision.

Correct Answer: Option A — Polaris. Polaris is correct because it is a Cepheid variable star. It is also associated with located in Ursa Minor. Together, these two facts identify Polaris precisely within Universe. Why the other options are incorrect: Option B — Betelgeuse: Betelgeuse is a red supergiant star. It is also associated with located in the constellation Orion, so these facts identify Betelgeuse rather than Polaris. Option C — Crab Nebula: Crab Nebula is a supernova remnant. It is also associated with located in the constellation Taurus, so these facts identify Crab Nebula rather than Polaris. Option D — Black hole: Black hole is a region where escape velocity exceeds the speed of light. It is also associated with often formed from the collapse of a massive star, so these facts identify Black hole rather than Polaris. Exam Takeaway: Link Polaris with “a Cepheid variable star” and “located in Ursa Minor” for quick revision.