Q.1: A Greek shepherd named ______________ discovered the natural magnets.
Q.2: Magnetite contains ________.
Q.3: The materials which have the property to attract iron are known as _________ materials.
Q.4: A freely suspended bar magnet always aligns in the ___________ direction.
Q.5: The magnetic power in the magnets is strongest in the _________.
c) top surface
Q.6: Which of the following materials is a non-magnetic material ?
Q.7: The device which was developed based on the property of magnets of finding directions is ____________.
b) cylindrical magnet
c) digital clock
Q.8: How can we turn a piece of iron into a magnet ?
a) By planting it inside the soil.
b) By rubbing it against a magnet for several times.
c) By praying.
Q.9: Which of these statements are correct regarding the safe-keeping of magnets ?
i) Don’t heat magnets.
ii) Don’t drop magnets from some height.
iii) Keep the magnets near cassettes, mobiles, music system, etc.
a) i and iii
b) ii and iii
c) i and ii
Q.10: The end of the magnet that points towards North is called ____________.
a) North-seeking end
b) North pole