Consider the following statements 1 Tides are of great help in navigation and fishing 2 High tide en...........

Indian Geography (Easy) Physiography of India

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Consider the following statements :

1. Tides are of great help in navigation and fishing.

2. High tide enables big ships to enter or leaves the harbour safely.

3. Tide prevents siltation in the harbours.

4. Kandla and Diamond Harbour are tidal ports.

1 and 4

2, 3 and 4

1, 2, 3 and 4

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Explanation:

1, 2, 3 and 4

The periodical rise and fall of the sea level, once or twice a day, mainly due to the attraction of the sun and the moon, is called a tide.
Movement of water caused by meteorological effects (winds and atmospheric pressure changes) are called surges (storm surge during cyclones).
The study of tides is very complex, spatially and temporally, as it has great variations in frequency, magnitude and height. The moon’s gravitational pull to a great extent and to a lesser extent the sun’s gravitational pull, are the major causes for the occurrence of tides. Another factor is centrifugal force which acts opposite to gravitational pull of earth. Tides occur due to a balance between all these forces.