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

Multiple choice

What is the time period between two full moons?

  1. Less than 15 days

  2. 15 days

  3. Less than 29 days

  4. 29 days

  5. More than 29 days
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The time period between one full moon to the next full moon is slightly longer than 29 days. In many calendars, this period is called a month.

Multiple choice

Which of the following statements is NOT true for the moon?

  1. Moon is a non-luminous object.

  2. Moon is earth's satellite.

  3. Moon is a celestial object.

  4. Moon is the closest celestial object to earth.

  5. Moon changes its shape during different phases of moon.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The various shapes of the moon as seen during a month are because we see only that part of the moon, from which the light of the sun is being reflected towards us. There is no alteration in the shape of the moon.

Multiple choice

How many times in a month can one see a full moon?

  1. Once a month

  2. Once a fortnight

  3. Twice a month

  4. Twice in a fortnight

  5. Weekly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

One can see a full moon only about once a month. Then it starts decreasing and then comes the new moon night, when it starts increasing again.

Multiple choice

Why can the moon and the other celestial bodies of the night sky NOT be seen during the daytime?

  1. The moon and the other shining celestial bodies can only be seen at night.

  2. The moon appears at night time only.

  3. The gases of which the celestial bodies are made, prevent us from seeing them during the daytime.

  4. The sun does not allow us to see the celestial bodies of the night sky during the daytime.

  5. Due to their distance during the daytime.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct option.

Multiple choice

Why is it difficult to observe the planet Mercury?

  1. Because of its small size

  2. Because it is at a large distance from Earth

  3. Because of the glare from the sun

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is difficult to observe the planet Mercury because of the glare from the Sun. 

Multiple choice

Which of the following statements is not true?

  1. Uranus rotates from east to west.

  2. Uranus has a highly tilted rotational axis.

  3. Uranus in its orbital motion appears to roll on its side.

  4. Uranus can be seen through small telescopes.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Uranus can be seen only through large telescopes.

Multiple choice

Which of the following statements is/are true?

  1. Saturn has a large number of satellites.

  2. Saturn appears yellowish in colour.

  3. Rings of Saturn can be seen with naked eyes.

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Saturn has a large number of satellites and it appears yellowish in colour.

Multiple choice

Why does Earth appear blue-green from space?

  1. Due to reflection of light from water and landmass

  2. Due to refraction of light from water and landmass

  3. Due to transmission of light from water and forests

  4. Everything looks blue and green from space
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to reflection of light from water and landmass, Earth appears blue-green from space.