Numbers

Magnetism is a force all around us.  It cannot be seen but the way it acts can be seen.  Magnets exert a force of attraction on anything made of iron.  Anything made of iron will be attracted to a magnet.  A magnet will not attract things that are not made of, or do not contain iron.

N S

Look at the magnet above.  It is called a bar magnet.  It has two ends.  The end labeled N means north.  The end labeled S means south.  These two ends are the magnetic poles.  The force of a magnet is strongest at the poles.  If you tie a string to the middle of a bar magnet, the north end will point north and the south end will point south.

The earth is like a giant magnet!  The magnetic fields surrounding earth are near the North Pole and the South Pole.  That is why the poles or ends of a bar magnet are called north and south.

Look at the magnets below.  The south pole of a magnet attracts the north pole of another magnet.

N S

N S

Unlike poles attract

Repel means "push away" or "push apart."  Look at the magnets below.  The north pole of the magnet repels the north pole of the other magnet.

S N

N S

Like poles repel

Try it yourself! Get two bar magnets and experiment with them.

Directions: Answer the questions about magnetism.

Which one will a magnet attract? plastic comb
paperclip
shoelace
Which one will a magnet not attract? glass
screw
nail
The south end of a bar magnet is labeled N
S
The north end of a bar magnet is labeled N
S
A bar magnet is strongest at the middle
poles
The earth is like a giant force
magnet
iron
The north end of a bar magnet always points to the north
south
The south end of a bar magnet always points to the north
south
Repel means push away
come together
Poles that are not alike repel each other
attract each other
Poles that are alike repel each other
attract each other

 

 

Elementary & Middle School Lessons & Self-Correcting Tests for Children in all Subject Areas.
If you have found an error or would like to make comments on this lesson, please email us at:
MySchoolhouse.online@gmail.com

Copyright 1999-2020 by Educational Designers, LLC.  All rights reserved.
Lessons & Tests in Math, Reading, Spelling, Science, Language, and Social Studies.

"This site uses cookies from Google to deliver its services and analyze traffic. Your IP address and user-agent are shared with Google along with performance and security metrics to ensure quality of service, generate usage statistics, and to detect and address abuse."
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
WORK SPACE
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Using a Magnet, Magnetism