Magnetic Field

Magnetic fields are represented by field lines that show the direction and strength of the field.

Rules for field lines:

• Lines go from north to south outside the magnet.
• Lines never cross.
• Closer lines indicate a stronger field.
• The direction at any point is the direction a north pole would be pushed.

The Earth has a magnetic field that can be detected using a compass. The geographic north pole is near the magnetic south pole.