Tag: moon

Questions Related to 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.


Correct Option: D
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.

The large grouping of stars, dust and gas held together by gravity are called:

  1. Galaxies

  2. Nebulae

  3. Pulse

  4. Comets


Correct Option: A
Explanation:

Galaxies are large grouping of stars, dust and gas held together by gravity.
Nebulae : cosmic element of gas
Pulse: The rapidly pulse
Comets: Left ones from formation of planetary system

If new moon day is day $1$, then what is the day when half of the moon is visible?

  1. $10$

  2. $3$

  3. $7$

  4. $14$


Correct Option: C
Explanation:

If new moon day is day $1$, then-

Day $3$ - Crescent moon
Day $7$ - Half moon
Day $10$ - Gibbous moon (or waxing)
Day $14$ - Full moon

If new moon day is day $1$, then what is the day of the crescent moon?

  1. $7$

  2. $10$

  3. $3$

  4. $14$


Correct Option: C
Explanation:

If new moon day is day $1$, then:

Day $3$ - Crescent moon
Day $7$ - Half moon
Day $10$ - Gibbous moon (or waxing)
Day $14$ - Full moon

sky appears blue because of 

  1. Total Internal

  2. Scattering

  3. Refraction

  4. Total internal reflection


Correct Option: B
Explanation:

Sky appears blue because of Scattering.Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.


Therefore, B is correct option.

Phases of the moon occur because:

  1. We can see only that part of the moon which reflects light towards us

  2. Our distance from the moon keeps changing

  3. The shadow of the Earth covers only a part of moon's surface

  4. The thickness of the moon's atmosphere is not constant


Correct Option: A
Explanation:

Phases of the moon occur because we can see only that part of the moon which reflects light towards us.
The changing shape of the bright part of the Moon that we see is called its phase. 
The moon is illuminated because it reflects the light from the sun. The part of the moon facing the sun is lit up. The part facing away from the sun is in darkness.

If new moon day is day $1$, then what is the day of the gibbous moon?

  1. $14$

  2. $3$

  3. $7$

  4. $10$


Correct Option: D
Explanation:

If new moon day is day $1$, then-

Day $3$ - Crescent moon
Day $7$ - Half moon
Day $10$ - Gibbous moon (or waxing)
Day $14$ - Full moon

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


Correct Option: A
Explanation:

Half moon are the phase of moon when the moon is half lit so only half visible.

First Quarter and third Quarter.

Moon's phase cycle repeats on an average of ______ days.

  1. $365$

  2. $120$

  3. $15$

  4. $30$


Correct Option: D
Explanation:

There are $12$ phases of moon which repeats after $30$ days. New cycle start after $30$ days

Which word also means 'growing'?

  1. Waxing

  2. Waning

  3. Gibbous

  4. Crescent


Correct Option: A
Explanation:

New Moon is a phase of the moon cycle in which it is not visible at all.

On the next day, a small part of the moon is visible. Thereafter, the moon appears to be expanding day by day.
On a special day, the moon appears completely full and visible. This is known as Full Moon. 
This apparent growing of the moon is also called a Waxing of the moon.