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What is a coast and its importance - Iczmpwb.org

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Tides<br />

Definition: The periodic r<strong>is</strong>e <strong>and</strong> fall of the<br />

level of the sea over a given time<br />

interval <strong>is</strong> called tide.<br />

Diurnal tides: Locations having single low<br />

<strong>and</strong> high tides per day<br />

Semi-diurnal tides: Those with two high<br />

<strong>and</strong> low tides per day.<br />

Mixed tides: The height of the low <strong>and</strong> high<br />

tides varies from day to day as the<br />

positions of the sun <strong>and</strong> moon change<br />

relatively each other.<br />

Spring tides: Tides with a large range occur<br />

in lunar days.<br />

Neap tides: Tides with a small range that<br />

occur when the moon <strong>is</strong> in quarter

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