Available Answers

1. 1.

   Fill in the blanks.

   1. ___________ is a piece of iron that attracts other small pieces of iron.
   2. A magnet has two poles- ___________ and ___________.
   3. The magnet which occurs naturally is called ___________.
   4. ___________ is a natural magnet.
   5. ___________ magnets can be given any shape.
   6. ___________ is a device used for determining directions.
   7. ___________ behaves like a huge bar magnet.
   8. ___________, ___________, ___________ and ___________ are the four cardinal points on the compass.
   9. Like poles of the magnets ___________ each other.
   10. Cranes use ___________ to lift and transport iron materials.
2. 2.

   Tick (√) the correct answer:

   1. A magnet attracts
      1. rubber
      2. iron
      3. aluminium
      4. plastic
   2. Which of the following material is non-magnetic in nature?
      1. Gold
      2. Iron
      3. Nickel
      4. Cobalt
   3. Which of the following is a natural magnet?
      1. Iron
      2. Steel
      3. Lodestone
      4. Cobalt
   4. Which of these is a magnetic substance?
      1. Cobalt
      2. Nickel
      3. Iron
      4. All of these
3. 3.

   Fill in the blanks:

   1. Like poles ________________, whereas unlike poles ________________ each other.
   2. ________________ is a natural magnet.
   3. ________________ device is used for determining directions.
   4. The force by which a magnet attracts objects is called ________________.
   5. The attraction of the magnet is greatest at its ________________.
4. 4.

   Write 'T' for true and 'F' for false:

   1. A magnet has two poles.
   2. Fe₂O₃ is the formula of magnetite.
   3. A magnet can have two north poles.
   4. The end of a magnet pointing towards the south direction is called the south pole.
   5. A magnet has one north pole and one south pole.
5. 5.

   Match the following:

   Column I	Column II
   1. Magnetism	a. Strongly attracted by magnets
   2. Magnetic material	b. Gold
   3. Magnetic substances	c. A device to determine directions
   4. Non-magnetic substance	d. Iron
   5. Magnetic compass	e. Property of magnetic attraction

    

6. 6.

   What is lodestone?