USA HISTORY

MAKING OF A NEW NATION 1776 1800

PRESIDENT JOHN ADAMS FROM ALIEN AND SEDITION ACTS TO XYZ AFFAIR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the separate canal compartments called where the water levels are raised or lowered?
A
canals
B
turnpikes
C
shelves
D
locks
Explanation: 

Detailed explanation-1: -In some rivers or canals the water is not too deep for large ocean-going ships. In such places large watertight compartments are built that help ships and boats go up or down different levels on rivers or canals. These are called canal locks.

Detailed explanation-2: -A lock is a structure found on waterways used for raising or lowering vessels from one water level to another. Locks consist of a rectangular chamber with swinging gates at each end.

Detailed explanation-3: -Conventional lock The lock gates and lower sluices close, making the lock chamber watertight. The upper sluices are then opened, allowing the water to enter the lock by gravity and raise the boat.

Detailed explanation-4: -The canal locks operate by gravity flow of water from GatĂșn, Alajuela, and Miraflores lakes, which are fed by the Chagres and other rivers. The locks themselves are of uniform length, width, and depth and were built in pairs to permit the simultaneous transit of vessels in either direction.

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