WORLD HISTORY

HISTORY

ANCIENT CHINA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a magnetic compass used for?
A
to tell time
B
to navigate
C
as a weapon
D
calculator
Explanation: 

Detailed explanation-1: -A compass is a navigational instrument for determining direction relative to the Earth’s magnetic poles. It consists of a magnetized pointer (usually marked on the North end) free to align itself with Earth’s magnetic field. The compass greatly improved the safety and efficiency of travel, especially ocean travel.

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