Question

What are tides? Write down two advantages of tides.

Accepted Answer

The term tide describes the regular alterations in sea level brought about by the gravitational pull of the sun, moon, and Earth. These celestial bodies' gravitational attraction causes the oceans of Earth to form tidal bulges, where water levels increase, and tidal troughs, where water levels fall. Two high tides and two low tides occur approximately every $24$ hours and $50$ minutes, by the lunar day. This indicates that tides follow a cyclic pattern. The advantages of tides are as follows:

Renewable Energy Source: The ability of tides to serve as a renewable energy source is one of their main advantages. By using devices like tidal turbines or tidal stream generators, tidal energy can be used to generate electricity from the kinetic energy of the tides' ebb and flow. Tidal power is a dependable and sustainable energy source since it is consistent and predictable.

Ecological Advantages and Distribution of Nutrients: In ecological processes, tides are very important, especially in coastal locations. The phenomena of upwelling, in which nutrient-rich waters from deeper ocean layers are brought to the surface, is facilitated in part by the rise and fall of the tides. The base of the marine food chain is made up of phytoplankton and other marine species, whose growth is aided by this nutrient enrichment.

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