Space & Astronomy
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Q41.Astronomy is the study of?
Correct Answer: C
Planet is the correct factual response to “Astronomy is the study of”.
Q42.Snowcapped mountains are found on which of the following planet?
Correct Answer: B
Mars is the correct factual response to “Snowcapped mountains are found on which of the following planet”.
Q43.Astronomy is the study of
Correct Answer: D
All of these is the correct factual response to “Astronomy is the study of”.
Q44.Snowcapped mountains are found on which of the following planet:
Correct Answer: C
Pluto is the correct factual response to “Snowcapped mountains are found on which of the following planet:”.
Q45._______ is the process that powers the Sun and the stars.
Correct Answer: B
Nuclear Fusion is the process that powers the Sun and the stars..
Q46.A Lunar eclipse occurs when ____?
Correct Answer: B
A lunar eclipse happens when the Earth passes directly between the Sun and the Moon, blocking sunlight from reaching the Moon.
Q47.A solar eclipse occurs when ____?
Correct Answer: B
A solar eclipse occurs when the Moon passes directly between the Earth and the Sun, casting a shadow on Earth.
Q48.Approximate age of Moon is ____?
Correct Answer: C
Analysis of lunar rock samples collected by Apollo missions indicates the Moon's age is approximately 4.53 billion years.
Q49.Approximate age of Sun is ____?
Correct Answer: C
The Sun is in the middle of its main sequence lifetime, with an estimated age of 4.6 billion years.
Q50.Who was the first scientist to prove that Planets move around the sun?
Correct Answer: B
Using his newly improved optical telescope in the early 1600s, Galileo Galilei gathered observations confirming heliocentrism.
Q51.In what year did Galileo first use an optical telescope to study the moon?
Correct Answer: B
Galileo constructed his first telescope and initiated historical lunar astronomical observations in autumn 1609.
Q52.Largest moon in our solar system is ____?
Correct Answer: B
Ganymede, a satellite of Jupiter, is the largest moon in the Solar System, possessing a diameter of 5,268 km (larger than Mercury).
Q53.What was the first planet to be discovered using a telescope?
Correct Answer: A
Uranus was discovered by William Herschel in 1781. The other inner/outer planets had been known since antiquity.
Q54.Which of the following planets has the smallest diameter?
Correct Answer: A
Since Pluto's reclassification as a dwarf planet, Mercury is the smallest major planet in the Solar System.
Q55.Which of the following was first to be discovered in the chromosphere of the sun?
Correct Answer: D
Helium was discovered in 1868 as a bright yellow signature in the Sun's chromosphere before it was isolated on Earth.
Q56.Which of the following spacecraft enabled man to step on the moon first?
Correct Answer: D
The Apollo 11 lunar module landed Neil Armstrong and Buzz Aldrin on the Moon's surface on July 20, 1969.
Q57.The planet that moves round the Sun at the highest speed is____?
Correct Answer: D
Mercury, being closest to the Sun, has the shortest orbital path and the strongest gravitational pull acting on it, giving it the highest orbital speed of any planet.
Q58.The second largest moon titan” is belongs to which planet?
Correct Answer: C
Titan, the second-largest moon in the Solar System, is a moon of Saturn and is even larger than the planet Mercury.
Q59.The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it?
Correct Answer: C
About 30% of incoming solar energy is reflected back into space by the atmosphere, clouds, and Earth's surface (Earth's albedo).
Q60.Which of the following is the largest planet?
Correct Answer: B
Jupiter is the largest planet in the Solar System by both mass and volume.