Moon's Light

Q. Question 19

Suppose the moon emits light of its own. Would it still have phases? Justify your answer.

Q.

Does the Moon Have a Dark Side?

Q. Same sides of the Moon is visible to the earth because:

1. Earth’s rotation and revolution periods are different
2. Rotation and revolution periods of moon are same
3. Diurnal motion of moon
4. Diurnal motion of earth

Q.

What is a supermoon?

Q.

Arrange in ascending order the following moon phases based on illumination - Full, Crescent and New

Q. At what phase the entire illuminated portion of the moon is seen?

1. Full Moon
2. New Moon
3. Waxing gibbous
4. First Quater

Q. Does the moon spin faster than the earth

Q. The eclipse achieves totality only in limited geographical regions because _______________________.

1. size of the shadow of the moon on the earth is small compared to the cross-section of the earth
2. earth is not a smooth flat surface, but has elevations and depressions
3. trajectories of the earth around the sun and the moon around the earth are not perfect circles
4. sun rays can reach most of peripheral regions of the shadow of the moon due to atmospheric refraction

Q. Which moon is also referred to as "Dark Moon"?

1. Waning Crescent
2. New Moon
3. Full Moon
4. Waning Gibbous

Q. Which two moons are also called half moons?

1. First Quarter & Third Quarter
2. Waning Crescent & Waxing Crescent
3. Waxing Crescent & First Quarter
4. Full & New Moon

Q. At which phase the moon is nearest to the sun?

1. First Quater
2. New Moon
3. Third Quater
4. Full Moon

Q. After the period of how many days half moon can be seen?

1. $7$ or $22$ days
2. $1$ or $30$ days
3. $15$ days
4. $10$ or $17$ days

Q. Which word also means 'growing'?

1. Waning
2. Waxing
3. Gibbous
4. Crescent

Q. Face of the moon is always the same when looked from the Earth. The reason is ________________________.

1. it revolves on its axis in a direction that of the Earth
2. it rotates at the same speed as the Earth around the Sun
3. All the above
4. the rotation and revolution of Moon take the same time as those of the Earth

Q. Which of the following is a consequence of the fact that the rotation and revolution periods of the moon are the same?

1. The moon keeps the same face turned toward the earth
2. The moon can never be seen from one hemisphere of the earth
3. All lunar phases can be seen from the earth
4. There are about 12 months per year