Tides and gulf geometry — UPSC Prelims PYQ 2004

Which one of the following statements is not correct?

1. Gulfs with narrow fronts and wider rears experience high tides.
2. Tidal currents take place when a gulf is connected with the open sea by a narrow channel.
3. Tidal bore occurs when a tide enters the narrow and shallow estuary of a river.
4. The tidal nature of the mouth of the river Hooghly is of crucial importance to Kolkata as a port.

Explanation

Option (a) is the correct answer

• It is actually gulfs with wide fronts and narrow rears (like the Bay of Fundy in Canada) that experience the highest tidal ranges due to funneling effects.

Answer: (a) Gulfs with narrow fronts and wider rears experience high tides.