Question

A compass is used
A. To show the symbol
B. To find the direction
C. To measure the distance
D. None of the above

Answer 1

Hint: During the navigation compass is identified as an important device. Though the design of the compass has changed over time, the concept of working mechanism is still the same. China is regarded as the first civilization to develop compasses for navigation purposes.

Complete answer:
Compass is regarded as an important device for navigation. The most well known type of compass is magnetic compass. The construction of the compass has changed over the years but the key mechanism remains the same. Magnetic compass consists of a magnetized needle that rotates with the magnetic field of the earth. The end points are called magnetic north and magnetic south. Earliest compasses were made by a magnetized needle which was usually attached by a piece of cork or wood that could float easily in a dish of water. Chinese civilization was the first to invent the compass. Compass is used to indicate directions. Operation of compass is on magnetic or gyroscopic principles or by determining the direction of sun or star. Magnetic compass work since Earth is a huge bar magnet with north and southeast fields that follow freely moving magnets to take the same aim.
So, the correct answer is Option B.

Note: Compass is a device which is used to show direction. It consists of a needle which points towards the north. The magnet consists of a small magnet which can arrange itself with the magnetic field of the Earth. The needle of the compass always points towards the north. It is regarded as an important device for navigation to find direction since in the open sea there are no landmarks.