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181 magnets & magnetism revised.notebook 1 March 29, 2017 Jan 185:21 PM Magnets Jan 184:55 PM Magnet any material that attracts iron. Properties of Magnets. All magnets have a north pole and a south pole. > If you break a magnet in half, each half will have a N and S pole. > Just like with electric charge... Like magnetic poles repel Opposite poles attract.

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Page 1: Magnet any material that attracts iron. Properties of ...mrlongvb.weebly.com/uploads/2/8/7/9/28793597/hardcopy_--_magne… · Magnet any material that attracts iron. Properties of

18­1 magnets & magnetism ­ revised.notebook

1

March 29, 2017

Jan 18­5:21 PM

Magnets

Jan 18­4:55 PM

Magnet ­­ any material that attracts iron.

Properties of Magnets.• All magnets have a north pole and a south 

pole.> If you break a magnet in half, each half 

will have a N and S pole.> Just like with electric charge...– Like magnetic poles repel– Opposite poles attract.

Page 2: Magnet any material that attracts iron. Properties of ...mrlongvb.weebly.com/uploads/2/8/7/9/28793597/hardcopy_--_magne… · Magnet any material that attracts iron. Properties of

18­1 magnets & magnetism ­ revised.notebook

2

March 29, 2017

Jan 18­5:44 PM

Checkpoint:  Are these magnets attracting or repelling?

Jan 18­5:43 PM

• Magnets are surrounded by a magnetic field.

Draw me!

Magnetic field lines indicate the flow of magnetic force.

Page 3: Magnet any material that attracts iron. Properties of ...mrlongvb.weebly.com/uploads/2/8/7/9/28793597/hardcopy_--_magne… · Magnet any material that attracts iron. Properties of

18­1 magnets & magnetism ­ revised.notebook

3

March 29, 2017

Jan 18­5:45 PM

• Magnets are made of the metals iron, nickel or cobalt.

Jan 18­5:52 PM

• These metals are magnetic because their magnetic domains (groups of atoms) all line up in the same direction.

• The Earth is a giant magnet...it has an iron/nickel core.

How do we know Earth has an iron/nickel core?