Enumerating different types of tides highlight their significance. Also, explain how tides are different from waves.

Tides are the rise and fall in the sea level due to certain factors. These occur due to affect of gravitational forces of moon and the sun and their impact on seas. Different types of tides are:- i Diurnal tide:- There are variations in tides in the day. There are usually one-high and one-low tide in the day. ii Spring Tide:- when the sun, moon and the earth align in a straight line – the tides are straight line – the tides are at the maximum. It happens during new moon and full moon nights.

iii Neap Tide: This occur when the sun, moon and earth are not side aligned. It forms a low tide. Significance: i Helps in generation of electricity through tidal energy. ii Material from the sea is collected over the coast. - helps cleaning up the seas - provide some useful resources - provide nutrients to the fishes collected from land. iii Helps in cleaning up of the beaches. iv Inter-tidal zones are rich in bio diversity – edge effect. Eg Estuaries. Tides are different from waves in the following ways:- i Tides are formed due to gravitational forces whereas waves are formed due to rotation and effect of wind on the sea surface. ii Waves do not lead to change in sea level. iii Waves are constants throughout the year and few without any faux. iv Waves help in the movement of ships.