Tag: sun and planets

Quizzes (13) Questions (36)

Questions Related to sun and planets

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Fill in the blank:

During one synodic month, the Moon takes ______ complete revolution around the Earth with respect to the background stars.

  1. $1$
  2. $0.5$
  3. $2$
  4. $0.25$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The time taken by the Moon to complete one revolution around the Earth with reference to the background stars, is called a synodic month.
Multiple choice evs sun and planets moon the moon's path in the sky the moon

On which day is the whole disc of the Moon visible?

  1. New moon day

  2. Full moon day

  3. Half moon day

  4. Crescent moon day
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

On a full moon day, the entire bright or illuminated part of the Moon faces the Earth. Hence it is visible as a whole disc.

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Fill  in the blank:

The smallest part of the moon that appears in the sky is called ________.

  1. full moon

  2. half moon

  3. crescent moon

  4. quarter moon
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The smallest part of visible moon is called crescent moon. It appears after and before the new moon day. This occurs because of continuous change in the shape of the bright part of the moon. This change is called phases of the moon.

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Why can life not exist on Moon?

  1. Moon is very far from the Earth.

  2. There is no atmosphere and water on the Moon.

  3. Moon is a satellite of the Earth.

  4. The time taken for one rotation and one revolution of the Moon is same.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For life to exist, water is very essential. However, there is no water as well as no atmosphere on the Moon. Hence, life cannot exist on Moon.

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Fill in the blank:

The size of the visible part of the Moon _______ gradually after the full moon day till the new moon day.

  1. remains the same

  2. increases

  3. decreases

  4. either increases or decreases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Moon revolves around the Earth from East to West. Along with the Earth it also revolves around the Sun. Moon does not have its own light. Hence, we can see only that part of the moon that is illuminated by the Sun. When the moon is in the East, it lies somewhere between the Earth and the Sun. Thus the illuminated part faces the Sun and the dark part faces the Earth. Thus we cannot see any moon in the sky. This is the new moon day. After this, gradually the Moon starts moving towards the West through North. As it moves in this path, the illuminated part of the Moon gradually faces the Earth and we see the phases of the Moon from new moon, to crescent moon. Then half moon, and finally the full moon, when it reaches the West, in the West, the entire illuminated part of the moon faces the Earth and it is the full moon day. Then moon gradually starts moving towards the east once again through south and the visible part of the moon goes on decreasing in the same manner until the new moon day and the cycle keeps repeating itself. Thus we see the phases of Moon. It takes 15 days for the moon from new moon day to full moon day and another 15 days from full moon day to new moon day.

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Fill in the blanks:

_________ was the first man to land on Moon on ________.

  1. Edwin Aldrin, July 21, 1970

  2. Neil Armstrong, July 21, 1896

  3. Neil Armstrong, July 21, 1969

  4. Edwin Aldrin, July 21, 1966
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Neil Armstrong was the first astronaut to land on Moon on July 21, 1969 as per Indian time.

Multiple choice evs sun and planets moon the moon's path in the sky the moon

Surface of the Moon is

  1. dusty and barren.

  2. having many craters and mountains.

  3. rough and irregular.

  4. as all of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

According to the astronauts the surface of the Moon is rough, dusty, barren and irregular. It has large craters on its surface and many steep and high mountains.