What geological factor accounts for the absence of navigation locks along the 193 km length of the Suez Canal?
Answer and explanation
Correct answer: D. The Mediterranean Sea and Red Sea share practically identical mean sea levels without topographic barriers
- Step 1: Unlike the Panama Canal, which traverses mountainous terrain with freshwater locks, the Suez Canal is a sea-level canal.
- Step 2: The Mediterranean and Red Seas have negligible sea level difference across the Isthmus of Suez.
- Step 3: Ships transit through a continuous open saltwater channel connecting Port Said to Suez.
Answer
The Mediterranean Sea and Red Sea share practically identical mean sea levels without topographic barriers.
Why not the others: Pumping stations are not used; the isthmus is flat low-elevation desert; waterfalls do not exist.
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