Explore how magnets affect compasses and create magnetic fields.
Move different magnet types around and observe how compass needles align with the magnetic field!
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Observation:
The compass needles align with the magnetic field created by the magnet.
Magnetic Fields and Compasses
How It Works:
Magnets create invisible magnetic fields
Compass needles are small magnets themselves
The needle aligns with the magnetic field lines
The red end points to the magnet's south pole
Key Concepts:
- Magnetic fields flow from North to South pole
- Like poles repel, opposite poles attract
- Earth has its own magnetic field (why compasses point north)
Magnet Types:
Bar magnets: Simple north-south poles at ends
Horseshoe magnets: Stronger field between close poles
Disk magnets: Flat with poles on faces
Ring magnets: Poles on top and bottom surfaces
Historical Note:
The first compasses were used in China during the Han Dynasty (206 BC–220 AD) for divination and geomancy before being adapted for navigation.
