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Magnets Questions

   1. What happens if you hold the north poles of two different magnets close to each other?

 

   2. What happens if you hold a south pole and a north pole of two different magnets close to each other?

   3. What is the cause of the earth magnetic field?

  A - The movement of liquid iron in the Earth’s outer core.

  B - The gravitational field of the Earth.

  C-  The permanent magnet in the Earth’s core.

   4. State two magnetic materials.

   5. Why is iron a suitable material for the core of a transformer?

   6. What is a solenoid? 

   7.  Give one example of a use for an electromagnet.

 

   8.  Give one example of a use for a permanent magnet.

   9.  Do the lines of a magnetic field travel from:

  A - North to south 

  B - South to north 

   10. What is a tempory magnet?