A compass works like a little magnet that follows the Earth’s hidden magnet. Imagine the Earth is a giant bar magnet, and the compass needle is also a tiny one. The needle turns until it lines up with the Earth’s invisible magnetic field, and that means north! It doesn’t need electricity because magnets are always trying to match each other.
Examples
- A compass works like a magnet inside a little box, it doesn’t need electricity, just the magic of magnets.
- Even on a boat in the middle of the ocean, a compass can guide the way without needing power.
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Categories: Science · magnetism,navigation,ancient technology