Stars and the Solar System Test

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Stars and the Solar System Test - 20

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Weekly Quiz Competition

Question 1
1 / -0

Venus: brightest planet:: Jupiter: _________

A
Reddish planet

B
Smallest planet

C
Dim planet

D
Largest planet

Solution

Venus is the brightest planet of our solar system and Jupiter is the largest.
Question 2
1 / -0

_________ stated that Sun was the centre of our universe and not Earth.

A
Albert Einstein

B
Isaac Newton

C
Nicolaus Coppernicus

D
Galileo Galilei

Solution

In ancient times, it was believed that the Earth was at the center of the universe and the moon, the planets, the Sun, and stars were orbiting around it. About $$500$$ years ago, a Polish priest and astronomer, named Nicolaus Copernicus $$(1473 – 1543)$$, stated that the Sun was at the center of the solar system and the planets revolved around it.
Question 3
1 / -0

Mercury and Venus, both, do not have any

A
atmosphere

B
solid matter

C
satellite

D
fixed orbit

Solution

Mercury and Venus have no natural satellites. they are both inner planets and inner planets tend to have very few or no satellites and rings.
Question 4
1 / -0

The planet, ________ is called morning or evening star.

A
Jupiter

B
Venus

C
Saturn

D
Earth

Solution

Venus is the brightest of all planets. It can be seen sometimes in the eastern sky before sunrise and in the western sky just after sunset. Hence, it is called the morning or evening star.
Question 5
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Which of the following properties is not exhibited by planets?

A
Do not have their own light

B
Revolve around the sun and rotate around itself

C
Keep changing their position

D
Follow randomly changing orbits

Solution

Planets do not have their own light. Those merely reflect the Sun's light that falls on them.
Planets revolve around the Sun while rotating on axes.
Planets keep changing positions.
However, each planet has a particular orbit in which it revolves around the Sun. Planets do not change their orbits randomly.
Question 6
1 / -0

The time taken by a planet for one complete revolution changes according to:

A
Its distance from the Sun

B
Its size

C
Its mass

D
The shape of its orbit

Solution

A planet has a definite path in which it revolves around the Sun. This path is called an orbit. The time taken by a planet to complete one revolution is called it's period of revolution. The period of revolution increases as the distance of the planet increases from the sun.
Question 7
1 / -0

________ is the fastest rotating planet.

A
Saturn

B
Jupiter

C
Uranus

D
Earth

Solution

Jupiter is the fastest rotating planet. It takes only $$9$$ hours and $$55$$ mins to complete one rotation about its own axis.
Question 8
1 / -0

Find the odd one out:

A
Jupiter

B
Saturn

C
Mars

D
Earth

Solution

Earth is the only planet that has life on it. All the rest have no trace of life on those.
Question 9
1 / -0

Planets do not collide with each other because

A
those are of different sizes

B
those have fixed, non-intersecting individual orbits

C
those rotate from West to East

D
each planet has a different time of rotation and revolution

Solution

Every planet is at a different distance from the Sun and has a fixed orbit in which it revolves around the Sun. The Sun"s gravitational force holds the planets in this place and they do not collide with each other as their orbits are non-intersecting.
Question 10
1 / -0

There is life on Earth because of:

A
optimum sunlight

B
presence of water and atmosphere

C
presence of ozone layer

D
All of the above

Solution

Earth is at an optimum distance from the Sun, therefore the sunlight reaching the Earth is not extremely hot. Also, the ozone layer prevents the entry of harmful rays. Earth also has presence of water and atmosphere that are essential for life to grow.

Hence, option D) All of the above, is correct.

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Re-Attempt Weekly Quiz Competition

Stars and the Solar System Test - 20

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Stars and the Solar System Test - 20

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SHARING IS CARING

Question 1

Reddish planet

Smallest planet

Dim planet

Largest planet

Solution

Question 2

Albert Einstein

Isaac Newton

Nicolaus Coppernicus

Galileo Galilei

Solution

Question 3

atmosphere

solid matter

satellite

fixed orbit

Solution

Question 4

Jupiter

Venus

Saturn

Earth

Solution

Question 5

Do not have their own light

Revolve around the sun and rotate around itself

Keep changing their position

Follow randomly changing orbits

Solution

Question 6

Its distance from the Sun

Its size

Its mass

The shape of its orbit

Solution

Question 7

Saturn

Jupiter

Uranus

Earth

Solution

Question 8

Jupiter

Saturn

Mars

Earth

Solution

Question 9

those are of different sizes

those have fixed, non-intersecting individual orbits

those rotate from West to East

each planet has a different time of rotation and revolution

Solution

Question 10

optimum sunlight

presence of water and atmosphere

presence of ozone layer

All of the above

Solution

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