Fun with Magnets
Chapter 10
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.
2. State whether the following statements are true or false:
(i) A cylindrical magnet has only one pole.
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(ii) Artificial magnets were discovered in Greece.
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(iii) Similar poles of a magnet repel each other.
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(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought
near them.
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(v) Bar magnets always point towards North-South direction.
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(vi) A compass can be used to find East-West direction at any place.
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(vii) Rubber is a magnetic material.
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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.
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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.
5. Write any two properties of a magnet.
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6. Where are poles of a bar magnet located?
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7. A bar magnet has no markings to indicate its poles. How would you find out near which
end is its north pole located?
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8. You are given an iron strip. How will you make it into a magnet?
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9. How is a compass used to find directions?
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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.
