1. Name the magnetic iron ore once used as a primitive compass.   Lodestone   Soft Iron   Keeper   Hint Half-n-half Clue   2. Soft iron can be highly magnetized but the magnetism in it is temporary.   True   False   3. The magnetic equator is an imaginary line parallel to the magnetic axis.   True   False   4. Temporary magnets are made of _______.   soft iron   copper   steel   Half-n-half Clue   5. The imaginary line NS passing through the magnetic north and south poles of a bar magnet is called the   magnetic equator   magnetic axis   magnetic meridian   Half-n-half Clue   6. An iron nail is suspended vertically from a string. When a strong bar magnet is brought close to it, the iron nail is attracted to the magnet and the string assumes an inclined position. If a wooden plank is placed between the iron nail and the magnet, the string will _______.   return to its vertical position   remain in an inclined position   7. The distance between the magnetic north pole and magnetic south pole of a bar magnet is called the   length of magnet   effective length   equatorial axis   Half-n-half Clue