Question

In the St. Lawrence Seaway, ships are raised and lowered some 600 feet by a series of _______, sections of a waterway with closed gates where water levels are raised and lowered.

a) Locks
b) Dams
c) Bridges
d) Tunnels

Answer 1

Locks are used in the St. Lawrence Seaway to raise and lower ships through different water levels.

Step-by-step explanation:

In the St. Lawrence Seaway, ships are raised and lowered some 600 feet by a series of locks, sections of a waterway with closed gates where water levels are raised and lowered. Locks use gravity to move ships up or down through different water levels. They work by filling or emptying chambers with water to raise or lower the ship to the desired level. The locks in the St. Lawrence Seaway allow ships to navigate through the different water levels and continue their journey.