1. Bell work Will the following items attract or not attract to a magnet? 1.Aluminum foil 2.Plastic bottle 3.Wooden spoon 4.Glass cup 5.Paper clips 6.Screw

2. Magnets and Magnetism IAN pg 9-5

3. Any material that attracts iron or materials containing iron is called a magnet. All magnets have two poles, exert forces, and are surrounded by a magnetic field. The magnetic effects of a magnet are not even throughout the magnet.

4. Poles The poles of a magnet are the parts of a magnet where the magnet effects are strongest Opposites poles attract, you can put a north and a south together and they will attract Like poles repeal each other, you can’t put a north and a north together or south and south

5. When two magnets are put together they either attract or repel. This is called a magnetic force. A magnetic field exists in the region around a magnet in which magnetic forces can act. Closer/more lines=stronger magnet Farther/less lines=weaker magnet

6. What makes a material magnetic Moving electrons produce magnetic fields that give an atom a North and South pole. In most materials the atoms magnetic fields cancel each other out. In materials like iron atoms group in tiny regions called domains. The atoms create a strong magnetic field.

7. The domains of a magnet may not always stay aligned. This occurs when dropping a magnet or striking it to hard. Temperature can also change a magnet’s domain. Heat=Vibrations=out of alignment

8. A magnet can be made from an un- magnetized object made of iron,cobalt, or nickel by aligning domains in an object. You can align domains by rubbing one end of a magnet in one direction. This is how magnets pick up items, it aligns their domains.

9. Can you cut it in half? When you cut a magnet in half you end up with two magnets. Each one with one North and South Pole. Each domain within a magnet is like a tiny magnet with a North and South pole so even the smallest pieces of a magnet have two poles.

10. Ferromagnets are made from iron, nickel, or cobalt Electromagnets are produced by an electric current Temporary magnets are easy to create but loses its magnetism easily Permanent magnets are difficult to magnetize but retains its magnetic properties well

11. Earth as a magnet Earth behaves like a big bar magnet is running through it. The geographic poles don’t line up perfectly with the magnetic poles. Remember- Opposites attract! So the North of a compass is attracted to the South magnetic pole…located in the geographic North pole.