Daily Current Affair Quiz: 17th July 2020
by
Mentors4ias
·
July 17, 2020
1. Which of the following statements are true?
1. Gravitational lensing is a phenomenon, which occurs when a huge amount of matter, such as a massive galaxy or cluster of galaxies, creates a gravitational field that distorts and magnifies the light from objects behind it, but in the same line of sight.
2. These large celestial objects will magnify the light from distant galaxies that are at or near the peak of star formation. So, in a way these objects act as natural, cosmic telescopes and are called gravitational lenses.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: c
Justification:
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It is a phenomenon, which occurs when a huge amount of matter, such as a massive galaxy or cluster of galaxies, creates a gravitational field that distorts and magnifies the light from objects behind it, but in the same line of sight. o These large celestial objects will magnify the light from distant galaxies that are at or near the peak of star formation. So, in a way these objects act as natural, cosmic telescopes and are called gravitational lenses. o As a result, the galaxies appear much, much brighter than they actually are, because they’ve been highly magnified up to 50 times.
2. Ploonets are
(a) Planets with more mass than earth
(b) Pulsar stars
(c) Orphaned moons
(d) Hacking Technology
Ans: c
Justification:
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Ploonets are the orphaned moons that have escaped the bonds of their parent planet and start orbiting their stars instead.
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Ploonets could help explain some bizarre exoplanetary features and can also provide details on planet formation processes
3. Which of the following statement/s is/are true?
1. Arrokoth is located in the Kuiper Belt.
2. New Horizons is the first mission to explore the Kuiper Belt.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: c
Justification:
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Recently, Ultima-Thule was renamed as Arrokoth. Arrokoth is a Native American term meaning “sky” in the Powhatan/Algonquian language.
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It is a contact binary i.e it’s a single object, with two lobes, but the lobes are gently in contact. NASA had dubbed the larger lobe Ultima, and the other, which is about three times smaller, Thule.
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It is located in the Kuiper Belt- a donut-shaped region of icy bodies beyond the orbit of Neptune. New Horizons is the first mission to explore the Kuiper Belt. o The icy objects of the Kuiper Belt are remnants left over from the formation of the solar system.
4. Which of the following statement/s is/are true?
1. Goldilocks Zone refers to the habitable zone around a star.
2. Transiting Exoplanet Survey Satellite (TESS) is a NASA project.
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: c
Justification:
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NASA’s Transiting Exoplanet Survey Satellite (TESS) has discovered an Earth-size planet, named TOI 700 d, orbiting its star named TOI 700 in the Goldilocks Zone.
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Goldilocks Zone refers to the habitable zone around a star where it is not too hot or cold for liquid water to exist on the surface of surrounding planets.
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Earth is in the Sun’s Goldilocks zone.
5. Zo Kutpui is a festival associated with
(a) Mizoram
(b) Meghalaya
(c) Nagaland
(d) Assam
Ans: a
Justification:
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Mizoram government organised Zo Kutpui (festival) in at least 10 states across India and countries such as US, Myanmar and Bangladesh.
