Question

A compass can be used to:
A) Find the altitude of a place
B) Find the magnitude of magnetic field near a place
C) Find the directions of the place
D) Make artificial satellites

Answer 1

Hint:- The initials of the North, South, West and East directions are marked in a compass. The compass is mainly used for navigation. And the people used to have it always in traveling.

Complete Step by step answer:
The needle of the compass can freely rotate. And if we keep the compass in a place, its needle will align in a direction. That will be in the north- south direction always. The magnetic needle will always align with the horizontal component of the earth’s magnetic field. Thus the needle shows the magnetic north.
And the term magnetic declination is measured as the difference between the true north and the magnetic north. Compass will help for the analysis of magnetic declination.
The earth has its own magnetic field lines. While we are using the compass, the magnetic field of the compass along with earth’s magnetic field will show a direction. That is the needle of the compass points to the north direction. Where the needle points, that is the north direction. Thus the compass can be used to find the north if we are standing at an unknown place.
A compass can be used to find the directions of the place.
The answer is option C.

Note: The magnetic compasses are widely used in navigation for directions. But the magnetic needles cannot be used in the poles of the Earth hence the magnetic field lines are not stable.