🏆 which
Which force explains why a compass needle points north?
Quick Answer
The electromagnetic force explains a compass needle. Earth’s magnetic field interacts with the magnetic material in the needle.
The Full Story
A compass works because Earth behaves like a giant magnet, producing a magnetic field that aligns a tiny magnetic needle. Magnetism is part of electromagnetism, so the compass depends on that fundamental force. The field is generated by motion in Earth’s molten iron core, which acts like a geodynamo. This simple tool has been essential for navigation for centuries.
Key Facts
1.Earth’s magnetic field is produced by the geodynamo in the core
2.Compass needles align with magnetic field lines
3.Magnetism is a component of electromagnetism
YouTube Angle
Suggested video title for this topic:
"Why north is magnetic, not magical"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.