1. The magnetic equator is an imaginary line parallel to the magnetic axis.   True   False   2. 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 _______.   remain in an inclined position   return to its vertical position   3. Unlike poles attract each other.   True   False   4. 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   Hint Half-n-half Clue   5. Most of the magnetic power appears to be concentrated at certain points of a magnet. These points are called _______.   poles   inductors   keepers   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 an iron sheet is placed between the iron nail and the magnet, the string will _______.   return to its vertical position   remain in an inclined position   7. Soft iron can be highly magnetized but the magnetism in it is temporary.   True   False