Stars and the Solar System Test

Result

Stars and the Solar System Test - 49

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

In an artificial satellite, the use of a pendulum watch is discarded, because :

A
The satellite is in constant state of motion.

B
The effective value of g become zero in the artificial satellite.

C
The periodic time of pendulum watch is reduced.

D
None of these

Solution
Question 2
1 / -0

Consider the following statements regarding asteroids:
1. Asteroids are rocky debris of varying size orbiting the Sun.
2. Most of the asteroids are small but some have diameter as large as 1000 km.
3. The orbit of asteroids lies between the orbits of Jupiter and Saturn
of these statements

A
1 and 2 are correct

B
2 and 3 are correct

C
1, 2 and 3 are correct

D
1 and 3 are correct

Solution
Question 3
1 / -0

To a person on the moon, the sky appears

A
Blue

B
Black

C
White

D
Orange

Solution
Question 4
1 / -0

The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called

A
Meteorites

B
Comets

C
Meteors

D
Asteroids
Question 5
1 / -0

Which of the following is the brightest heavenly body in the evening/night sky

A
Mars

B
Satum

C
Jupiter

D
Venus

Solution
Question 6
1 / -0

What is known as the transit of planet Venus?

A
When Venus is observed at the time of solar eclipse

B
When the Venus comes in between the sun and the earth

C
When one sees Venus while one is in transit

D
When Venus is occulted by another planet.

Solution

Venus transit takes place when Venus comes in between the sun and the earth in a straight line.
Question 7
1 / -0

The group of small pieces of rocks revolving around the sun between the orbits of Mars and Jupiter are called:

A
Meteors

B
Comets

C
Meteorites

D
Asteroids

Solution

The group of small pieces of rocks revolving around the sun between the orbits of Mars and Jupiter are called Asteroids.
Question 8
1 / -0

How much of the total surface area of the Moon is never visible from the Earth?

A
41 per cent

B
47 per cent

C
53 per cent

D
59 per cent

Solution

The unseen portion of the Moon does not make up exactly 50% of the Moon's surface due to liberation. Liberation causes, over time, around 59% of the Moon's surface to be visible from the Earth
Hence, the total surface area of the moon never visible from the earth is (100-59)% = 41%.
Question 9
1 / -0

The tail of a comet is directed away from the sun because

A
The comet rotates around the sun the lighter mass of the comet is pushed away due to the centrifugal force alone.

B
The comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail.

C
The radiation emitted by the sun exerts a radial pressure on the comet throwing its tail away from the Sun.

D
The tail of the comet always exists in the same orientation.

Solution

Comet tails will always point away from the sun because of the radiation pressure of sunlight. The force from sunlight on the small dust particles pushing them away from the sun is greater than the force of gravity acting in the direction toward the sun.
Question 10
1 / -0

Consider the following statements regarding asteroids:
1. Asteroids are rocky debris of varying sizes orbiting the Sun.
2. Most of the asteroids are small but some have diameter as large 1000 km.
3. The orbit of asteroids lies between orbits of Jupiter and Saturn.
Which of the statements given above are correct?

A
1 and 2 only

B
2 and 3 only

C
1 and 3 only

D
1, 2 and 3

Solution

Asteroids are rocky debris of varying sizes orbiting the Sun. They are generally small but some has the diameter of 1000 km. Asteroids are mirror planets whose orbits lie between Jupiter and Mars.