Quiz

Now you had learn about magnet, click on the links bellow to test your understanding on this topic.

http://www.engineeringinteract.org/resources/parkworldplot/flash/tests/questions/magneticforces.htm

http://www.engineeringinteract.org/resources/parkworldplot/flash/concepts/magneticforces.htm

http://www.bbc.co.uk/apps/ifl/schools/ks2bitesize/science/quizengine?quiz=magnetsandsprings&templateStyle=science

Lesson 5 The Uses of Magnet

Did you know that magnets hold the fridge door closed?

Magnet hidden in fridge door

 Fridge magnet can also hold papers on the fridge door

Did you know that magnets are used to lift cars in a scrapyard?

Did you know that cranes with giant magnets are used to pick/pull out metals from landfills?

A toy crane

Did you know that magnets fasten hand bags?

We can keep the door open by installing magnet into doorstoppers.

Magnets are used to make electric motors and generators. Without these electric motors and generators we would not have telephones, lights, electric heat, television, or computers. 

Dynamo of a bicycle

There are many other things that are using magnet, can you name it? Please write in the comment bellow.

Lesson 4 Magnet Strengths

For your standard, to know the strength of a magnet , you may count how many paperclips or staples you can attach to one of the magnet's poles.

1. Hold a magnet firmly.
2. Place a paper clip at the end of a magnet.
3. Place another paper clip at the end of the first paper clip.
4. Continue doing this until  the magnet cannot hold anymore paper clips.
5. Count the number of paper clips the magnet can hold.
6. Repeat step 1 to 5 with different types of magnets.
7. Record your findings in your science journal.

Lesson 3 Handling Magnets

In this lesson you will learn the proper way of handling magnets.

Some activities will cause the magnet to lose its magnetism. Heating, dropping, and knocking the magnet will weaken its strength.

• We must hold a magnet firmly so that it don't drop.
• We must keep the magnets in their boxes.
• Use a metal bar (keeper) to connect the ends of the magnets if the magnets are kept in pairs.

View this video to understand how magnet keeper keep the magnetism:

Lesson 2 Materials attracted by Magnets

Materials Attracted by Magnets






We already learnt that magnets can attract each other. Other things can also be attracted by magnets too.

Objects that are attracted by magnets are  magnetic objects. The following are some example of magnetic objects:

Objects that are not attracted by magnets are non-magnetic objects. The following are some example of non-magnetic objects:

Play the following game to test your understanding on magnetic and non-magnetic objects.

Lesson 1 Magnets Attract or Repel

Magnets Attract or Repel


7.1.1 Pupils should learn that magnets can attract or repel each other.

Every magnet has two poles, north pole and south pole.

If the poles are different, they will attract each other.(a) (b)

 If the poles are the same, they will repel each other.(c) (d)

You can view this video clip from Youtube for further understanding:

http://mrhardy.wikispaces.com/Magnetism.swf 

You can even create your own magnet!