NCERT Solutions for Class 8 Science Chapter 17 - Stars and the Solar System

Question 1:

Which of the following is NOT a member of the solar system?

1. An asteroid
2. A satellite
3. A constellation
4. A comet

Question 2:

Which of the following is NOT a planet of the Sun?

1. Sirius
2. Mercury
3. Saturn
4. Earth

Question 3:

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 the Moon’s surface.
4. the thickness of the Moon’s atmosphere is not constant.

Question 4:

The planet which is farthest from the Sun is ____________.

Question 5:

The planet which appears reddish in colour is ____________.

Question 6:

A group of stars that appear to form a pattern in the sky is known as a ____________.

Question 7:

A celestial body that revolves around a planet is known as ___________.

Question 8:

Shooting stars are actually not ____________.

Question 9:

Asteroids are found between the orbits of ___________and ___________.

Question 10:

Pole Star is a member of the solar system.

1. TRUE
2. FALSE

Question 11:

Mercury is the smallest planet of the solar system.

1. TRUE
2. FALSE

Question 12:

Uranus is the farthest planet in the solar system.

1. TRUE
2. FALSE

Question 13:

INSAT is an artificial satellite.

1. TRUE
2. FALSE

Question 14:

There are nine planets in the solar system.

1. TRUE
2. FALSE

Question 15:

Constellation Orion can be seen only with a telescope.

1. TRUE
2. FALSE

Question 16:

Match the items in column A with one or more items in column B.

1. TRUE
2. FALSE

Question 17:

Match the items in column A with one or more items in column B.

1. Inner planets
2. Outer planets
3. Constellation
4. Satellite of the Earth

Question 18:

In which part of the sky can you find Venus if it is visible as an evening star?

Question 19:

Name the largest planet of the solar system.

Question 20:

What is a constellation? Name any two constellations.

Question 21:

Draw sketches to show the relative positions of prominent stars in (a) Ursa Major and (b) Orion

Question 22:

Name two objects other than planets which are members of the solar system.

Question 23:

Explain how you can locate the Pole Star with the help of Ursa Major.

Question 24:

Do all the stars in the sky move? Explain.

Question 25:

Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?

Question 26:

The radius of Jupiter is 11 times the radius of the Earth. Calculate the ratio of the volumes of Jupiter and the Earth. How many Earths can Jupiter accommodate?

Question 27:

Boojho made the following sketch of the solar system. Is the sketch correct? If not, correct it.