What is the tides

The tides are the movement of waves up and down repeatedly daily, due to the gravitational interactions between the Earth, the Sun and the Moon, which usually occurs in shallow areas near the shore.[1]

The mechanism of the tides

The force of attraction that causes the tides coming from the moon has a greater effect than the force of attraction of the sun due to the moon’s proximity to the earth compared to it, as the force of gravity works to swell the sea upwards, leading to a rise in its level, in both the regions closest and farthest from the moon, and with the rotation of the earth, the rise of the water remains In the areas under the influence of the presence of the moon, the waves seem to move outward and inward with the apparent movement of the moon approaching or farther, which causes the phenomenon of tides, where the tidal current heading towards the shore is called the flood current, and the away current is called the constriction current.[2]

tidal wave effect

The tidal currents sometimes destroy the beaches, as the incoming waves reduce the amount of sand dunes on the beach, while the moving currents cause the erosion of the beach, especially the rocky beach, leaving it with very rugged slopes.[3]

The benefits of tides

The tides have a number of benefits that can be summarized as follows:[4]

  • The beginning of the tides is important for fishermen, as it helps them know when their boats enter the sea, and when they will return.
  • The tides are cleaning up seaports.
  • Large ships take advantage of the tides to enter narrow sea lanes.
  • The phenomenon of tides works on the movement of sea waves in a manner suitable for surfers.
  • The tides benefit young boys, who are novice at swimming, as tidal currents bring them back towards shore.
  • Tidal currents move fish eggs from one place to another, causing a diversity of marine organisms.[2]
  • The nutrients needed to feed the fish are transported from the sea to bays and estuaries.

the reviewer

  1. ↑ “What is a tidal wave?”, oceanservice.noaa.gov, Retrieved 10-11-2018. Edited.
  2. ^ AB JENNIFER HORTON, “How Ocean Currents Work”, science.howstuffworks.com, Retrieved 10-11-2018. Edited.
  3. ↑ Laura Klappenbach (8-3-2017), “How Do Tides and Waves Work?”, www.thoughtco.com, Retrieved 10-11-2018. Edited.
  4. ↑ “The Tides”, www.gafrd.org, 8-4-2009, Retrieved 10-11-2018. Edited.

Explain the tides

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