NCERT Solutions for Class 8 Science Science - NCERT Solution Chapter 17

Stars and the Solar System Class 8

Chapter 17 Stars and the Solar System Exercise Solutions

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Exercise : Solutions of Questions on Page Number : 234

Q1 :  

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

(a) An asteroid

(b) A satellite

(c) A constellation

(d) A comet


Answer :

(c) Constellation

A constellation is not a member of the solar system.Constellations are groups of stars that form recognisable shapes.

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Q2 :  

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

(a) Sirius

(b) Mercury

(c) Saturn

(d) Earth


Answer :

(a) Sirius

Sirius is a star and not a planet of the sun.

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Q3 :  

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.


Answer :

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Q4 :  

Fill in the blanks:

(a) The planet which is farthest from the sun is _________.

(b) The planet which appears reddish in colour is _________.

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

(d) A celestial body that revolves around a planet is known as a_________.

(e) Shooting stars are actually not _________.

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


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Q5 :  

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

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

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

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

(d) INSAT is an artificial satellite. ( )

(e) There are nine planets in the solar system. ( )

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


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Q6 :  

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

A

B

(i)

Inner planets

(a)

Saturn

(ii)

Outer planets

(b)

Pole star

(iii)

Constellation

(c)

Great Bear

(iv)

Satellite of the Earth

(d)

Moon

(e)

Earth

(f)

Orion

(g)

Mars


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Q7 :  

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


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Q8 :  

Name the largest planet of the solar system.


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Q9 :  

What is a constellation? Name any two constellations.


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Q10 :  

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


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Q11 :  

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


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Q12 :  

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


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Q13 :  

Do all the stars in the sky move? Explain.


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Q14 :  

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?


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Q15 :  

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?


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Q16 :  

Boojho made the following sketch (Fig. 17.29) of the solar system. Is the sketch correct? If not, correct it.

Fig. 17.29


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<< Previous Chapter 16 : Light Next Chapter 18 : Pollution of Air and Water >>

Science - NCERT Solution - Science : CBSE NCERT Exercise Solutions for Class 8th for Stars and the Solar System will be available online in PDF book form soon. The solutions are absolutely Free. Soon you will be able to download the solutions.

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