Planets in Our Solar System

Q.

What is bigger, the sun or the earth?

Q.

How many earths can be fit inside the sun?

1. Around 50000

2. Around 500

3. Around 1 million

4. Around 10000

Q.

Which is the nearest star from our Solar system?

1. Sirius

2. Proxima Centauri

3. Alpha Centauri

4. Tau Celti

Q. Why does the moon have different shapes on different nights? [3 MARKS]

Q.

Which is the brightest star in our night sky?

1. Wolf

2. Proxima Centauri

3. Sirius A

4. Alpha Centauri

Q.

Which of the following is the birthplace of a star?

1. Milky way

2. Galaxy

3. Nebula

4. Sun

Q.

How far is the Sun from the Earth?

Q.

Stars are primarily made of ___.

1. Carbon only

2. Helium and Carbon

3. Nitrogen and Carbon

4. Hydrogen and Helium

Q.

Light year is the unit of the following physical quantity

1. Time

2. Distance

3. Mass

4. None

Q.

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 moons surface

4. The thickness of the moons atmosphere is not constant

Q. The period in which the full moon changes to a new moon is called

1. Lunar month
2. None of these
3. Waxing period
4. Waning period

Q.

What is the purpose of the star map?

1. None of the above

2. To find planets in the night sky.

3. To see where planets, the sun, and moon are in the night sky.

4. To see when and where things such as stars are in the night sky

Q. What are star maps and what are they used for?

Q.

A star in the sky also gives us an idea of a point . Identify at least five situations in your daily life.

Q.

$Kilometre$is a convenient unit for measuring distances in the universe.

1. True
2. False

Q.

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

Q.

Choose the correct option.

Statement 1: The shape of the moon changes every day and the various shapes seen during a month are called phases of the moon.

Statement 2: Moon has no light of its own. We see only that part of the moon, which reflects light of the sun to us. The position of moon changes due to its revolution around the earth and hence, the portion of the moon reflecting the light of the sun to us also changes.

1. Both Statements are wrong

2. Statement 1 is wrong and statement 2 is correct

3. Statement 1 is correct and statement 2 is correct explanation for it

4. Statement 1 is correct but statement 2 is not the correct explanation for it

Q.

Which star is at the center of our solar system?

1. Proxima Centauri

2. Sun

3. Evening Star

4. Sirius

Q. If the distance between earth and sun is increased to three times then the attraction between the two will 1.remains constant 2.decrease by 63% 3.decrease by 83% 4.decrease by 89%

Q.

Suppose the moon emits light of its own. Which of the following statements are false?

1. Moon can be called as a star

2. There will be phases of Moon

3. There will be a new moon day once in a month

4. There will not be any phases of Moon

Q.

Which of the following celestial bodies can emit light on their own?

1. Sun

2. Venus

3. Alpha Centauri

4. Thiruvathira

Q. The brightest star Sirius is located near which of the following constellations?

1. Ursa Major
2. Cassiopeia
3. Orion
4. Leo Major

Q.

Light takes $8$ minutes to reach the earth from the sun. Which of the following is correct?

1. Sun is $8$ light minutes away from the earth

2. Sun is one light year away from the earth

3. Sun is 8 light seconds away from the earth

4. Sun is $8$ light years away from the earth

Q.

At what position of the Moon will we see a full Moon on Earth?

1. D

2. B

3. A

4. C

Q.

Phases of the Moon occur because

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

2. Our distance from the moon keeps on changing

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

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

Q.

The position of the Sun is fixed in the universe.

1. False
2. True

Q. What are the bright objects that are in the night sky which are not luminous?

1. Stars
2. Planets
3. Constellations
4. The Sun

Q.

Which is the biggest star is our solar system?

Q.

Why are we not able to see the stars during the day time?

1. Both B and C

2. Because of the brightness of sunlight

3. Because they are behind the earth during daytime

4. Because stars don't exist during daytime

Q. Tarun got to know that the next nearest star to us is Alpha Centauri and is at a distance of 4 light years from the Earth. What does it mean?

1. Light has to travel 48 months to reach that star.

2. Light has to travel 43 months to reach that star.

3. Light has to travel 40 years to reach that star.

4. Light has to travel 4 months to reach that star.