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NCERT Solutions for Class 6th Science

Chapter 13 - FUN WITH MAGNETS

(Complete Downloadable Chapter Solution PDF file is at the bottom of the page)

 

Q.1      Fill in the blanks in the following

           (i) Artificial magnets are made in different shapes such as _____, ____ and ________.

           (ii) The Materials which are attracted towards a magnet are called________.

           (iii) Paper is not a ______ material.

           (iv) In olden days, sailors used to find direction by suspending a piece of ___________.

           (v) A magnet always has __________ poles.

Ans     (i) Artificial magnets are made in different shapes such as _bar_, _horse-shoe_ and _cylindrical_.

           (ii) The Materials which are attracted towards a magnet are called _magnetic materials_.

           (iii) Paper is not a _magnetic_ material.

           (iv) In olden days, sailors used to find direction by suspending a piece of _bar magnet_.

           (v) A magnet always has _two _ poles.

Q.2      State whether the following statements are true or false

           (i) A cylindrical magnet has only one pole.

          (ii) Artificial magnets were discovered in Greece.

          (iii) Similar poles of a magnet repel each other.

          (iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them.

          (v) Bar magnets always point towards North-South direction.

          (vi) A compass can be used to find East-West direction at any place.

          (vii) Rubber is a magnetic material.

Ans    (i) A cylindrical magnet has only one pole. (FALSE)

          (ii) Artificial magnets were discovered in Greece. (FALSE)

Q.3      It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.

Q.4      Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.

Column I                                 Column II

  N - N                                                 _________

  N - _________                      Attraction

  S - N                                      _________

  _________ - S                       Repulsion

Q.5      Write any two properties of a magnet.

Q.6      Where are poles of a bar magnet located?

Q.7      A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?

Q.8      You are given an iron strip. How will you make it into a magnet?

Ans     The process of making magnet is:

           1) Place a rectangular piece of iron on the table.

           2) Without lifting move a bar magnet along the length of the iron piece starting from one end to the other            end.

           3) Now lift the bar magnet and bring it to the starting point again with the same pole of the bar magnet.

           4) On repeating the process for at least 30 to 40 times, the iron piece will start attracting iron fillings and              become a bar magnet with two poles.

Q.9      How is a compass used to find directions?

Q.10    A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Affect observed in each case is stated in Column I. Possible reasons for the observed affects are mentioned in Column II. Match the statements given in Column I with those in Column II.

Column I                                                                    Column II

Boat gets attracted towards the magnet                Boat is fitted with a magnet with north

pole towards its head

Boat is not affected by the magnet                         Boat is fitted with a magnet with south

pole towards its head

Boat moves towards the magnet if north              Boat has a small magnet fixed along its

pole of the magnet is brought near its                   length

head

Boat moves away from the magnet when             Boat is made of magnetic material

north pole is brought near its head

Boat floats without changing its direction            Boat is made up non-magnetic material

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