Question

What is tidal? Explain in brief.

Answer 1

Hint: Due to the combined effects of gravitational forces exerted on the Moon and the Sun along with the rotation of the Earth, there is a certain rise and fall of the sea levels. Tide causes the change in the depth of the sea level producing oscillating currents which are known as tidal.

Complete step-by-step answer:
On the given location on the Earth, the change in the tide streams depends on the changing positions of the Moon and the Sun and the gravitational force exerted by the Sun is almost two hundred times stronger than that by the Moon. The Moon produces twice the tidal force compared to that produced by the Sun.

Most of the tides are semidiurnal that means it takes place twice a day.
One of the most reliable phenomena in the world is tides. By considering the sun rises in the east and the stars coming out at night, we come to know that the ocean waters will also regularly rise and fall along our shores.

Tides are very long-period waves which move through the oceans with response to the forces exerted by the Moon and Sun. Tides initiate in the oceans and progress toward the coastlines where they seem to be as the regular rise and fall of the sea surface.

When the highest part, or crest, of the wave reaches a particular location then the high tide occurs and the low tide corresponds to the lowest part of the wave, or it is called the trough. The difference in height between the high tide and the low tide is termed as the tidal range.

Note: By using the tidal energy, the energy is generated by various methods generally in the form of electricity. It is a renewable source of energy. Do not get confused with the terms such as ocean and geothermal energy. Tidal streams help coastal navigators for the prediction.