EM: Magnetic Field

• Physics
• Secondary Education
• Age 13

Forces and Motion 9.1

Magnetic Fields

How are you today?

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Highlights of the Day

• describe a magnetic field, and explain that it surrounds a magnet and exerts a force on other magnetic fields

• Values :  Responsibility and Determination

Fun Facts!

The Earth is a giant ______________.

Sort this out!

Magnetic Materials

Non-Magnetic Materials

Paper clip

Plastic

Push pin

Iron Nail

Glass

Wood

Clay

Rubber

Cloth

Pebble

Magnets

A magnet is something that will attract magnetic materials. Magnetic materials include the metals iron, steel, nickel and cobalt. 

Lodestone

Pyrrhotite

Columbite

Basalt

Shapes of

Magnetic Poles

How are magnets made?

Challenge Questions

• What will happen if you put a paperclip near a magnet?
• What will happen as you move the paperclip away from the magnet? 

magnetic field - is the area around a magnet where the effects of the magnet can be detected; surrounds all magnets ; strongest at the poles

How can you detect a magnetic field?

• see whether a magnetic object moves because of attraction
• use a compass

compass

Rules: Magnetic Field Lines

• join opposite poles
• have arrows that point N     S
• must not touch each other
• must not cross each other

magnetic field - is the area around a magnet where the effects of the magnet can be detected; surrounds all magnets ; strongest at the poles

Self-survey: Rate your level of understanding and participation in this lesson.

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