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

The 22 year solar cycle refers to

  1. the length of time taken by the sun to rotate

  2. sunspots

  3. variation in the total number of detected neutrinos

  4. the length of a cycle for the time taken by proton-proton cycle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sunspot cycle happens because of pole flip — North becomes South and South becomes North—approximately every 11 years. Some 11 years later, the poles reverse again back to where they started, making the full solar cycle actually a 22-year phenomenon. The Sun behaves similarly over the course of each 11-year cycle no matter which pole is on top.

Multiple choice

Diamond ring is a phenomenon observed

  1. at the start of a total solar eclipse

  2. at the end of a total solar eclipse

  3. only along the peripheral regions of the totality trail

  4. only in the central regions of the totality trail
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diamond ring is observed in a solar eclipse, only along the peripheral regions of the totality trail.

Multiple choice

Equinox occurs when the sun is vertically over the

  1. equator

  2. tropic of cancer

  3. tropic of Capricorn

  4. poles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An equinox occurs when the sun is positioned directly over the equator, resulting in nearly equal day and night lengths globally. This happens twice a year.

Multiple choice

Why does the Earth have changing seasons?

  1. The Sun revolves around the Earth every 365 days.

  2. The Earth revolves around the Sun every 365 days.

  3. The Earth's rotation every 24 hours.

  4. The amount of humidity the Sun creates in the atmosphere.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Earth's seasons are caused by the tilt of the Earth's axis as it revolves around the Sun, which changes the angle at which sunlight hits different parts of the planet throughout the year.

Multiple choice

If the Sun is shining in the sky over Florida at 1:00pm on Tues., where will it be in 24 hours?

  1. setting in the West in California

  2. rising in the east over Japan

  3. shining in the sky over Africa

  4. shining in the sky over Florida
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Earth completes one full rotation on its axis in approximately 24 hours. Therefore, at the same time the next day, the Sun will be in the same position relative to the observer in Florida.