Magnetic Field Patterns

Magnetic Field Patterns

Magnets can attract and repel at a distance

• They affect magnetic objects within their magnetic field

Shape of the magnetic field

• The magnetic field is invisible

• There are two ways of showing the shape of the magnetic field

• Use iron filings: Tiny pieces of iron group together and line up to show the magnetic field

What is this?

• A compass.

• What do people use a compass for? How does it work?

Shape of magnetic field

• Another way to see the shape of the magnetic field, is to use small compasses, called plotting compasses

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The magnetic Earth

• People use a compass to help find their way around

• The compass needle points north because the Earth has a magnetic field. The Earth is basically a giant magnet

Multiple Choice

Magnets can interact without touching.

• True
• False

Multiple Choice

The effects of a magnetic field can be observed using non-metal fillings.

• True 
• False

Multiple Choice

Magnetic field lines are closet together at the __________.

• poles

• lines

Multiple Choice

Earth's magnetic poles are in the same place as the geographic poles.

• True
• False

Multiple Choice

Magnetic Field lines....

• Go into the N side AND go into the S side

• Go out of the S side and into the N side

• Go out of the N side AND out of the S side

• Go out of the N side and into the S side

Multiple Choice

Where is Earth's magnetic field strongest?

• Along the outside lines

• Along the inside lines on either side

• Where the lines are close together at the poles

• In the space outside of the lines

Multiple Choice

Magnetic field lines always cross.

• True
• False

Multiple Choice

Earth is like a giant magnet due to....

• its liquid iron core

• the wind patterns of Coriolis Effect

• the alignment of the continents

• solar particles moving through the atmosphere