MAGNETIC POLES

Background

For electricity we found that there were positive and negative charges, that like charges repel each other and opposites attract. Let's see if there's an analogy for magnetism.

Materials Needed

1 compass
2 bar magnets
assorted magnets
2 round pens or pencils

Procedure

1. The bar magnets are marked with North and South poles. Put the pens under one of the bar magnets for rollers. Use the other bar magnet to determine if like poles attract or repel. Record your findings.

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2. Move all of the magnets away from one bar magnet. Put the compass at the end of the magnet marked "N". Draw an arrow on the diagram below showing what direction the painted end of the compass needle points. Then repeat for the end marked "S".

3. Use the compass in the same way to determine the location of the North and South poles for each of the other magnets. Draw a sketch of each one and show the poles.