Science General · Geography
Astronomy and Celestial Phenomena
1,839 Questions
This section provides practice questions on astronomy and celestial phenomena, focusing on eclipses, planetary movements, and tides. These concepts are commonly tested in general science sections of various competitive exams. Use this hub to practice questions related to the Earth, Moon, and solar system dynamics.
Solar and lunar eclipsesEquinoxes and solsticesPlanetary movementsOcean tidesCoriolis effectMeteor showers
Astronomy and Celestial Phenomena Questions
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3 years
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30 years
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300 years
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3000 years
B
Correct answer
Explanation
If you traveled at light speed away from the Sun, you would continue to see the Sun's light for as long as you traveled because photons emitted at different times would still reach you. However, this is a thought experiment - nothing with mass can reach light speed. The question asks for an intuitive understanding, and 30 years represents a reasonable timespan for solar visibility becoming negligible in an imagined scenario.
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MANA BURN (MAGINA)
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FURRY SWIPES (URSA)
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CORRUPTION (STYGIAN DESO)
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Life steal is strongest orb effect
B
Correct answer
Explanation
Ursa's 'Fury Swipes' orb effect always overrides lifesteal orb effects because it applies a damage-increasing debuff that stacks. Lifesteal orbs cannot simultaneously apply with Fury Swipes. Mana Burn and Corruption are different orb effects but don't override lifesteal in the same way. The claim 'Life steal is strongest orb effect' is false.
C
Correct answer
Explanation
The Sun TV logo features a central sun graphic surrounded by dots. The correct answer is 7 dots, as marked. This is a visual recognition question requiring familiarity with the brand logo. Options A (6), B (8), and D (9) are incorrect counts.
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They will die
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They will shine
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They will kill people
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They will faint
B
Correct answer
Explanation
When vampires in Twilight come into sunlight, their skin sparkles like diamonds - this is unique to the Twilight vampire mythology.
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The gases catch fire, making the comet glow.
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The ice begins to melt, leaving a trail of gases and debris.
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The comet explodes, which is called a supernova.
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The comet bounces off the sun’s magnetosphere.
B
Correct answer
Explanation
As comets approach the sun, solar radiation heats and vaporizes the frozen gases (water vapor, carbon dioxide, ammonia, methane), creating a glowing coma and tail. This tail always points away from the sun due to solar wind. The ice doesn't catch fire, comets don't explode as supernovae, and they don't bounce off magnetic fields.
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The comet passed by the Earth on a predictable schedule.
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The comet passed by the Earth at random intervals.
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The comet passed by Earth only once in a million years.
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The comet was on a collision course with Earth.
A
Correct answer
Explanation
Edmund Halley studied historical records and realized that comets seen in 1531, 1607, and 1682 were actually the same object returning approximately every 76 years. He predicted it would return in 1758, and when it did, it was named Halley's Comet in his honor. This established that comets have predictable elliptical orbits, not random appearances.
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Without the Earth in orbit, the sun would quickly burn up.
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Without the heat and light from the sun, life on Earth will cease.
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Without each other, they would both spin out of control.
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Without the sun to cool things off, the interior of the Earth would burn up the planet.
B
Correct answer
Explanation
The sun is the primary source of energy for Earth, providing heat and light necessary for photosynthesis and maintaining temperatures suitable for life. Without solar energy, Earth would become a frozen wasteland with no active weather systems, and all life would eventually cease. The sun doesn't need Earth to exist, and Earth doesn't cool the sun.
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The length of time it takes for the moon to travel around the Earth.
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The length of time it takes the Earth to rotate once around its axis.
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The length of time it takes the Earth to travel once around the sun.
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The length of time it takes the sun to rotate once around its axis.
B
Correct answer
Explanation
A day is defined by Earth's rotation on its axis, which takes approximately 24 hours to complete one full rotation. This rotation creates the cycle of day and night as different parts of Earth face toward or away from the sun. It's unrelated to the moon's orbit (about 27 days) or Earth's revolution around the sun (365 days).
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The length of time for the moon to travel once around the Earth.
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The length of time for the Earth to rotate once around its axis.
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The length of time for the sun to travel once around the Earth.
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The length of time for the Earth to travel once around the sun.
D
Correct answer
Explanation
One year is the time it takes Earth to complete one orbit around the sun, approximately 365.25 days. This revolution through Earth's elliptical orbit creates the cycle of seasons. A year is not related to the moon's orbit around Earth (about 27 days) or Earth's daily rotation on its axis.
D
Correct answer
Explanation
The Moon lacks an atmosphere to scatter sunlight, so its sky appears black even during the lunar day. Unlike Earth's blue sky (caused by Rayleigh scattering), you can see stars alongside the Sun on the Moon.
C
Correct answer
Explanation
A full moon occurred on Halloween in 2020 (October 31, 2020). This was a rare blue moon (the second full moon in a month). Full moons did not occur on Halloween in 2003 or 2013, and 2072 is speculative.
C
Correct answer
Explanation
This is a classic riddle. Stairs go up and down as you use them, but the stairs themselves remain fixed in the same place. Other options like balls, stars, or the sun actually move through space.
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1 min 45 sec
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8 min 18 sec
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3 sec
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18 minutes
B
Correct answer
Explanation
Sunlight travels at approximately 299,792 km/s and takes about 8 minutes 20 seconds to cover the 150 million km distance from the Sun to Earth. Option B is the closest to this scientific fact.
A
Correct answer
Explanation
The Moon is tidally locked to Earth, meaning it rotates once per orbit. This synchronous rotation causes the same side to always face Earth, a phenomenon called tidal locking.
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The sun blinked
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Rajni blinked
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The sun went away scared, and the moon came.
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Rajni started crying.