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NCERT solutions Science Textbook For Class 8 chapter 17 Stars and the Solar System

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Chapter 17 - Stars and the Solar System

Pages 234 - 237

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

(a) An asteroid

(b) A satellite

(c) A constellation

(d) A comet

Q 1 | Page 234 | view solution

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

(a) Sirius

(b) Mercury

(c) Saturn

(d) Earth

Q 2 | Page 234 | view solution

Phases of the moon occur because

(a) we can see only that part of the moon which reflects light towards us.

(b) our distance from the moon keeps changing.

(c) the shadow of the Earth covers only a part of the moon’s surface.

(d) the thickness of the moon’s atmosphere is not constant.

Q 3 | Page 234 | view solution

Fill in the blanks:

The planet which is farthest from the sun is _________.

Q 4.1 | Page 234 | view solution

Fill in the blanks:

The planet which appears reddish in colour is _________.

Q 4.2 | Page 234 | view solution

Fill in the blanks:

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

Q 4.3 | Page 234 | view solution

Fill in the blanks:

A celestial body that revolves around a planet is known as a _________

Q 4.4 | Page 234 | view solution

Fill in the blanks:

Shooting stars are actually not _________.

Q 4.5 | Page 234 | view solution

Fill in the blanks:

Asteroids are found between the orbits of ________ __ and _________.

Q 4.6 | Page 234 | view solution

Mark the following statement as true (T) or false (F).

Pole star is a member of the solar system. ( )

Q 5.1 | Page 234 | view solution

Mark the following statement as true (T) or false (F).

Mercury is the smallest planet of the solar system. ( )

Q 5.2 | Page 234 | view solution

Mark the following statement as true (T) or false (F).

Uranus is the farthest planet in the solar system. ( )

Q 5.3 | Page 234 | view solution

Mark the following statement as true (T) or false (F).

INSAT is an artificial satellite. ( )

Q 5.4 | Page 234 | view solution

Mark the following statement as true (T) or false (F).

There are nine planets in the solar system. ( )

Q 5.5 | Page 234 | view solution

Mark the following statement as true (T) or false (F)

Constellation Orion can be seen only with a telescope. ( )

Q 5.6 | Page 234 | view solution

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

  A   B
1 Inner planets a Saturn
2 Outer planets b Pole star
3 Constellation c Great Bear
4 Satellite of the Earth d Moon
    e Earth
    f Orion
    g Mars
Q 6 | Page 235 | view solution

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

Q 7 | Page 235 | view solution

Name the largest planet of the solar system.

Q 8 | Page 235 | view solution

What is a constellation? Name any two constellations.

Q 9 | Page 235 | view solution

Draw sketches to show the relative position of prominent stars in Ursa Major

Q 10.1 | Page 235 | view solution

Draw sketches to show the relative position of prominent stars in Orion

Q 10.2 | Page 235 | view solution

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

Q 11 | Page 235 | view solution

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

Q 12 | Page 237 | view solution

Do all the stars in the sky move? Explain.

Q 13 | Page 237 | view solution

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?

Q 14 | Page 237 | view solution

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?

Q 15 | Page 237 | view solution

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

Q 16 | Page 237 | view solution

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