EM: Magnetic Field

• Physics
• Secondary Education
• Age 13

Forces and Motion 9.1

Lesson 16. 

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<b> magnet</b> is something that will attract magnetic materials. Magnetic materials include the metals <i>iron</i>, <i>steel</i>, <i>nickel</i> and <i>cobalt</i>.&nbsp;

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? 

<b style="color: rgb(248, 200, 45)">magnetic field </b>- is the area around a magnet where the effects of the magnet can be detected; surrounds all magnets ; <span style="font-weight: bold"><span style="color: rgb(248, 200, 45)">strongest </span>at the poles</span>

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

<b style="color: rgb(248, 200, 45)">magnetic field </b>- is the area around a magnet where the effects of the magnet can be detected; surrounds all magnets ; <span style="font-weight: bold"><span style="color: rgb(248, 200, 45)">strongest </span>at the poles</span>

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

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