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 evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

Our seasons are caused by:

  1. The changing distance between the earth and the sun

  2. The angle at which sunlight reaches the earth

  3. The length of the daylight hours

  4. Only (b) and (c) are correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seasons are primarily caused by the tilt of the Earth's axis, which changes the angle of sunlight and the duration of daylight throughout the year as the Earth orbits the Sun.

Multiple choice evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

The altitudes/height of heavenly bodies appears to be greater than they actually are. This is due to ____________________.

  1. Vertical motion of these heavenly bodies

  2. Motions of the earth

  3. Atmospheric refraction

  4. These are visible because of light of the sun reflected from their surface
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Atmospheric refraction
When sunlight enters the earth's atmosphere, it continuously goes from rarer to the denser medium and hence refraction of light takes place. The refraction of light taking place in the atmosphere is known as atmospheric refraction. 

Multiple choice physics turning effects of forces centre of gravity forces - vectors and moments acceleration due to gravity

Which among the following is the major cause of nutation in Earth's axis:

  1. Earth's Oblate spheroid shape

  2. The difference between Land and Sea hemispheres

  3. Oceanic Currents

  4. TIdal Forces
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In case of earth the principal sources of tidal forces are the sun and moon while continuously change location relative to each other and cause nutation in earth's axis, So option (D) correct.
Multiple choice botany transpiration guttation excretion in plants long distance transport of water

Guttation take place during night when

  1. Root pressure is positive

  2. Root pressure is negative

  3. Always take place

  4. It does not takes place at all
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Guttation is the loss of water in liquid form as a dilute solution from uninjured leaf tips. The uninjured leaf tips have hydathodes or water stomata. Under conditions of low transpiration dilute solution of minerals oozes out through them under the influence of increased root pressure. Thus, mostly guttation is observed during night time when transpiration is low, for example, due to high atmospheric humidity and sufficient water is present in soil. The most important force responsible for guttation is positive root pressure.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification five kingdoms of living organisms biodiversity and need of classification biodiversity and classification

During the course of a year, the sun will disappear from view near the North Pole on what date?

  1. June 21

  2. September 23

  3. December 23

  4. January 1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At the North Pole, the sun remains above the horizon for six months (from the spring equinox to the autumn equinox) and below the horizon for the other six months. The sun disappears after the autumn equinox, which occurs around September 23.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

Comets that return to view at regular intervals are called

  1. regular comets

  2. visiting comets

  3. periodic comets

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Comets that orbit the sun in predictable, repeating paths are defined as periodic comets. These objects return to the inner solar system at regular intervals.

Multiple choice social science universe and space the big bang and the early development of the universe origin of universe evolution of the universe

State whether true or false :
Comets are very small-sized celestial bodies that revolve around the sun in highly elliptical orbits.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Comets are indeed icy, small celestial bodies that follow highly elliptical orbits around the Sun. When they approach the Sun, they develop a tail due to solar radiation.

Multiple choice geography inside our earth the earth's structure structure of the earth our world components of earth earth and structure

Which of the following phenomenon gives an evidence for the spherical shape of the earth?

  1. Solar eclipse

  2. Lunar eclipse

  3. Revolution

  4. Rotation of Earth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During a lunar eclipse, the Earth casts a shadow on the moon. The circular shape of this shadow provides evidence that the Earth is spherical.

Multiple choice geography australia - location, political divisions and physical features australia australia australia - geographical features

Phenomenon in which glow is observed in sky at night called Aurora Australia is also classified as _______________.

  1. Southern lights

  2. Northern lights

  3. Western light

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

  • Aurora Australis is also known as southern lights or southern polar lights.
  • This is seen in southern hemisphere and best place to see is Antarctica.
  • Aurora Australis and Borealis are counterparts of each other formed in southern and northern hemispheres respectively.
  • Aurora is formed when charged particles from sun penetrate during a solar flare into earth’s magnetic field and collide with molecules in our atmosphere. These collisions result in countless little bursts of light.
  • When charged particles collide with oxygen, red and green aurora is produced while nitrogen produces pink and purple colours.

Multiple choice geography australia - location, political divisions and physical features australia australia australia - geographical features

What does the word Uluru means?

  1. A place where sun sets

  2. A place where sunlight and moon light meets

  3. A place where the wind moans between dawn and dusk

  4. A place where they worship
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Uluru is a sacred site for the Anangu people. While often associated with various legends, the specific cultural interpretation provided in option C reflects the poetic and spiritual significance attributed to the site.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

There is a pattern observed in the number of sum spots appearing every year called as

  1. solar cycle

  2. sun spot cycle

  3. solar period

  4. solar spot cycle
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sun spot cycle is a pattern observed in number of sun spots appearing every year due to revolution of earth arround sun with moon revolving earth.

Multiple choice physics rotational motion of a rigid body and moment of inertia angular momentum (l) and conservation of angular momentum angular momentum in case of rotation about a fixed axis law of conservation of angular momentum

When tall buildings are constructed on earth, the duration of day night 

  1. slightly increases

  2. slightly decreases

  3. has no change

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Moment of inertia $I$ inerease. Therefore, $\omega $ decreases (as $I \omega = $ constant). Hence time period increases
$\displaystyle \left( as: T=\frac{2 \pi}{\omega} \right) $