Science General ยท 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
B
Correct answer
Explanation
A solar eclipse does NOT always occur five weeks before or after a lunar eclipse. Eclipses occur in pairs or triplets during eclipse seasons, but the interval is typically about 2 weeks, not 5 weeks.
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11 minutes 43 seconds
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11 minutes 24 seconds
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12 minutes 24 seconds
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12 minutes 18 seconds
C
Correct answer
Explanation
The maximum possible duration of an annular solar eclipse is approximately 12 minutes 30 seconds. This occurs when the Moon is near apogee (farthest from Earth), appearing smaller in the sky and leaving a thin ring of the Sun visible at maximum eclipse.
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XYQ2
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luna
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Mr rock
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Just the moon
B
Correct answer
Explanation
Luna is the Latin name for Earth's moon. The moon has been called Luna since ancient Roman times and is still used in scientific contexts (lunar, lunation, etc.). 'Just the moon' is the common English term but not its formal name.
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keeps the planets in orbit
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arranges their orbit
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a and b
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None of the Above
C
Correct answer
Explanation
Gravitation keeps planets in stable orbits around the sun (option A) and determines the arrangement of their orbital paths (option B). Since gravitation is responsible for both maintaining orbital positions and organizing orbital structure, option C is the complete answer.
B
Correct answer
Explanation
The statement is false because sunlight is electromagnetic radiation (photons), not physical matter with mass that can be measured in pounds. Sunlight can be measured in terms of energy (joules, watts) or intensity, but not in units of mass like pounds. This appears to be a nonsensical statement designed to test scientific literacy.
B
Correct answer
Explanation
The statement is false because sunlight is electromagnetic radiation (photons), not physical matter with mass that can be measured in pounds. Sunlight can be measured in terms of energy (joules, watts) or intensity, but not in units of mass like pounds. This appears to be a nonsensical statement designed to test scientific literacy.
B
Correct answer
Explanation
The statement is false because sunlight is electromagnetic radiation (photons), not physical matter with mass that can be measured in pounds. Sunlight can be measured in terms of energy (joules, watts) or intensity, but not in units of mass like pounds. This appears to be a nonsensical statement designed to test scientific literacy.
B
Correct answer
Explanation
The statement is false because sunlight is electromagnetic radiation (photons), not physical matter with mass that can be measured in pounds. Sunlight can be measured in terms of energy (joules, watts) or intensity, but not in units of mass like pounds. This appears to be a nonsensical statement designed to test scientific literacy.
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Solar flares
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Sun shadows
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Solar shades
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Sunspots
D
Correct answer
Explanation
Sunspots are temporary, darker areas on the Sun's photosphere caused by intense magnetic activity that inhibits convection, making those regions cooler (about 3000-4500 K versus 5800 K for the surrounding photosphere). Solar flares are sudden, intense bursts of radiation. 'Sun shadows' and 'solar shades' are not real solar phenomena.
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Yellow giant phase
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Red giant phase
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Blue giant phase
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White giant phase
B
Correct answer
Explanation
When the Sun exhausts the hydrogen fuel in its core (in about 4-5 billion years), it will expand dramatically, becoming a red giant. During this phase, the outer layers will expand outward (possibly engulfing inner planets) while the core contracts and heats up, eventually beginning helium fusion. After the red giant phase, it will shed its outer layers and become a white dwarf. Yellow, blue, and white giants are different stellar evolutionary stages that don't apply to the Sun.
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Moon
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Stars
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Red Sun
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Sun and Moon
C
Correct answer
Explanation
The Red Sun is the central symbol on the Bangladesh national flag - a red disc representing the sun rising over Bengal. Moon, Stars, and Sun and Moon are not the primary symbols on Bangladesh's flag, which features the red sun disc on a green field.
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Hales bopp
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Hales comet
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great comet 1864
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none of these
B
Correct answer
Explanation
Halley's Comet (often misspelled as Hales) has an orbital period that averages about 76 years, though it varies between 74 and 79 years. It is the only known short-period comet that is regularly visible to the naked eye.
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solar eclipse
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lunar eclipse
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black hole
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sun spot
A
Correct answer
Explanation
A solar eclipse occurs when the Moon passes between the Sun and Earth, blocking the Sun's light from reaching certain areas on Earth's surface. A lunar eclipse is when Earth blocks sunlight from reaching the Moon (opposite configuration). Black holes and sun spots are unrelated astronomical phenomena.