USA HISTORY

FIRST CONTACTS 28000 BCE 1821 CE

CHRISTOPHER COLUMBUS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What enabled explorers to determine their direction while at sea?
A
astrolabe
B
caravel
C
compass
D
rudder
Explanation: 

Detailed explanation-1: -One of the simplest methods for determining a ship’s direction was to watch the movement of the sun across the sky. Sailors used the position of the sun as it moved from east to west to guide their route. At noon, they could determine north and south by the shadows the sun cast.

Detailed explanation-2: -Compasses, which indicate direction relative to the Earth’s magnetic poles, are used in navigation on land, at sea, and in the air.

Detailed explanation-3: -The astrolabe was used to determine latitude by measuring the angle between the horizon and Polaris, also called the North Star, the Pole Star, or Stella Maris (Star of the Sea).

Detailed explanation-4: -The mariner’s astrolabe was an important navigational tool for finding latitude. It is a simplified version of the traditional astrolabe – an instrument that could help tell time, find altitude, and find latitude. The mariner’s astrolabe measures the height of the sun or a star above the horizon.

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