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What is the difference between Spring Tide and Neap Tide? |
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Answer» The periodical vertical rise and fall of the surface of the sea water is called a tide. The rising of water is called the high tide or up tide while the falling of water is known as low tide or down tide. Tides are caused by the gravitational pull of the moon and to some extent, the sun. Tides are useful to us as they help in navigation and fishing. At the high tide, the depth of the seas particularly gulfs, and bays increases. This enables the big ships to enter or leave the harbours easily. Due to high tides in the Hooghly river the depth of the water increases. As a result big ships enter and leave the Kolkata port which is situated on the bank of this river. Some ports such as Kandla in Gujarat and Diamond Harbour in West Bengal depend on the tides. Tides, at some places, take away the mud brought down by rivers and prevent silting of harbours. Thus tides make the rivers suitable for navigation. |
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