Science General · Geography

Astronomy and Celestial Phenomena

1,884 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 interdependence in our environment meaning of environment significance of biodiversity habitat and adaptation

 Seasonal variations on Earth occur due to its 

  1. tilted axis

  2. rotation around its own axis

  3. revolution around sun

  4. both (a) and (c)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The revolution of our planet around the Sun and the tilt of axis cause annual variations in the intensity and duration of temperature, resulting in distinct seasons. These variations together with annual variation in precipitation account for the formation of major biomes such as desert, rain forest, and tundra. 

So the correct option is 'both (a), and (c)'.

Multiple choice

How long does the sun's rays take to reach Earth?

  1. 8 seconds

  2. 8 hours

  3. 8 minutes

  4. 8 days
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Light travels at a constant speed, and the average distance from the Sun to Earth is about 150 million kilometers, which takes light approximately 8 minutes and 20 seconds to traverse.

Multiple choice

Approximately how old is the Sun?

  1. 1 billion years

  2. 4.5 billion years

  3. 3 billion years

  4. 2 trillion years
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Scientific consensus based on stellar evolution models and radiometric dating of meteorites places the age of the Sun at approximately 4.5 to 4.6 billion years.

Multiple choice physics wave optics resolving power of optical instruments resolution of optical instruments diffraction

A photograph of the moon was taken with telescope. Later on, it was found that a housefly was siting on the objective lens of the telescope. In photograph

  1. the image of the housefly will be reduced

  2. there is a reduction in the intensity of the image

  3. there is an increase in the intensity of the image

  4. the image of the housefly will be enlarged
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice physics observing space: telescopes space research and satellites space travel space exploration and forms of light

Why is it advised to used telescope at night?

  1. During day, sun rays are very strong and it is not possible to see distant objects.

  2. Night sky is clearer than day sky.

  3. Both A and B

  4. Neither A nor B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Telescopes are used at night because of the following reasons:

1. Sun rays in day are very strong and other distant objects are not visible since the intensity of light from distant sources is much weaker.
2. Night sky is clearer than day sky primarily due to lesser pollution. This helps in formation of higher quality images at night.

Multiple choice

When does Earth make a shadow on the moon?

  1. Solar eclipse

  2. Lunar eclipse

  3. Earth eclipse
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A lunar eclipse occurs when the Earth passes between the sun and the moon, casting its shadow onto the moon.

Multiple choice

when does the moon make a shadow on Earth?

  1. Solar eclipse

  2. lunar eclipse

  3. Earth eclips
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A solar eclipse occurs when the moon passes between the sun and the Earth, casting its shadow onto the Earth.

Multiple choice

Moonlight is...

  1. reflected sunlight

  2. damaged sunlight

  3. stolen sunlight
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Moonlight is simply sunlight that has been reflected off the surface of the moon back to Earth.

Multiple choice

Earth's tilted axis and Earth's revolution cause

  1. Day

  2. Seasons

  3. Dreams

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

The tilt of Earth's axis means different parts of the planet receive varying amounts of direct sunlight as Earth revolves around the sun. This variation creates the cycle of seasons.

Multiple choice

When Earth faces away from the sun it is

  1. Day

  2. Evening

  3. Night
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When a location on Earth faces away from the sun, it is not receiving direct sunlight, resulting in night. Day occurs when the location is facing toward the sun.

Multiple choice

When Earth faces the sun it is

  1. Day

  2. Evening

  3. Night
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When a location on Earth faces the sun, it receives direct light, which we experience as daytime. Night occurs when the Earth has rotated away from the sun.

Multiple choice

the Earth making a shadow on the Moon.

  1. Lunar eclipse

  2. phase

  3. rotation

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

A lunar eclipse occurs when the Earth passes directly between the Sun and the Moon, casting its shadow onto the Moon's surface. A solar eclipse is the reverse.