Magnets

What are magnets?
Magnets are objects that attract certain kinds of metal, such as iron.

http://www.youtube.com/watch?v=ak8Bh9Zka50


What are magnetic poles?
Magnetic poles are the opposite points or ends of a magnet, where magnetic forces are the greatest.

http://www.youtube.com/watch?v=f1zGie-_IHY



What does attract mean?
'Attract' means to pull together.

What does repel mean?
'Repel' means to push apart.

What is a magnetic field?
A magnetic field is the area around a magnet in which magnetic forces can act.



 http://www.youtube.com/watch?v=MZtTVsIOA9c

What are lines of force?
 Lines of force are the lines that show magnetic field.

http://www.youtube.com/watch?v=bqklpgqeB5Q



Earth is a natural magnet.

http://www.youtube.com/watch?v=DYLQmSuqPjY