GEOLOGY

Detailed explanation-1: -Magnetic compass is used for navigation and its magnetic needle is made of permanent magnet which is always aligned according to the earth’s magnetic field.

Detailed explanation-2: -magnetic compass, in navigation or surveying, an instrument for determining direction on the surface of Earth by means of a magnetic pointer that aligns itself with Earth’s magnetic field.

Detailed explanation-3: -In a compass, only a magnetic needle is used that can rotate freely. When we keep a compass at a place, its magnetic needle will align itself in the north-south direction, because the earth also has its own magnetic field. Once the north-south direction is found then it is very easy to find the east-west direction too.

Detailed explanation-4: -Q. A compass uses the directive property of a magnet. Q. (i) A compass is used to show the directions.

Detailed explanation-5: -Directive property of magnet is used to prepare magnetic compass. Compass is an instrument which is used to find the directions. Compass consist of a tiny magnetic needle which is pivoted from the center and is free to rotate. The compass has a circular dial in which directions are marked.