Magnetic Fields Review Guide

Magnetic field

A magnetic field is an invisible area of force around a magnet that can push or pull other magnetic materials like iron.

Magnetic Field Lines

All magnets are dipolar. They have a north and south magnetic pole. Pole creating a loop.

The force of attraction exits what poles and enters through what pole creating a loop.

North to South

Attract

To draw by a physical force causing or tending to cause to approach, adhere, or unite; pull.

Repel

To push back or away by a force, as one body acting upon another; push.

Temporary magnet

Has coils of current carrying wire around a metal core.

Electromagnet

A temporary magnet that runs on electricity.

Magnet

A body, as a piece of iron or steel, that possesses the property of attracting certain substances, as iron.

Iron filings

Tiny pieces of iron used to visualize invisible magnetic fields.

Magnetism

A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects.

Compass

An instrument for determining directions, as by means of a freely rotating magnetized needle that indicates magnetic north.

Dipolar