Electromagnetic induction introduction to electromagnetic induction activity 1

=Activity No # 1 - To check the properties of the magnets=

Estimated Time
20 minutes

Materials/ Resources needed

 * 1) Magnets
 * 2) Magnetic needles with stand
 * 3) Mariner's compass

Website interactives/ links/ simulations
|Goto Goto Magnet & electromagnets simulations

Process (How to do the activity)
Give the magnets to students and check the properties of magnets. Ask the students properties of magnets. Give two magnets and a magnetic needle to students group (4-5students). Tell check the properties of magnets. Ask magnetic lines of force using phet tool of magnets and electromagnet.

Developmental Questions (What discussion questions)

 * 1) What is magnet?
 * 2) Is magnet attracts all materials?
 * 3) What we say the material which are attracted by magnet?
 * 4) If not attracted by magnet?
 * 5) In which direction bar magnet rest when freely suspended it. or magnetic needle or Mariner's compass.
 * 6) Identify the north and south poles of magnet.
 * 7) Does every magnet have a north and south pole?
 * 8) Is north-north or south-south attracted?
 * 9) Is north-south repelled?
 * 10) What happened when kept the bar magnet near the magnetic needle or mariner's compass?
 * 11) What happens when we break a magnet in half?
 * 12) Can you break off just the north (or just the south) end of a magnet?
 * 13) What is the strongest pole?

Evaluation (Questions)
4.
 * 1) If a magnetic needle placed along the north and south pole of a bar magnet as shown in the figure, what is the polarity of the a b c and d.     mark 2
 * Pole of    a   ________                *pole of     b  _______
 * Pole of    c _________                 *Pole of     d _________
 * 1) You are in ship at night & have a bar magnet. How do you recognize the east and west direction?
 * 2) Iron feelings are mix with tea powder? How to separate it quickly?
 * 3) Get a ring-shaped magnet and break it with pliers or a tap with a hammer. Try to put it back together. What happens? Why?

Question Corner
To link back to the topic page Back
 * 1) List the properties of magnet.
 * 2) Why magnetic needle or marine's compass always shows north south direction?
 * 3) What are magnetic lines of force?
 * 4) What are the properties of the magnetic lines of force?
 * 5) Draw the direction of magnetic lines of force of a bar magnet.
 * 6) What are the different types of magnets available?
 * 7) What is magnetite?
 * 8) How does a compass work?
 * 9) Who first used a compass?
 * 10) What are some uses of magnets?