Question

A compass has a small balanced pointer that always points in the North-South direction. This is because of the earth's___field.

Answer 1

The magnetic compass is the oldest instrument for navigation and has been a vital tool for navigators at sea for centuries. The earth has a substantial magnetic field, a fact of some historical importance because of the role of the magnetic compass in the exploration of the planet. No matter where you stand on the earth, you can hold a compass in your hand and it will point towards the north pole.