Why is there is ebb and flow?

Waves at the beach of Lisabon

Twice a day, the water will go off and on. If the water rises, we say call is ebb tide.

Tides are mainly due to the difference in attraction exerted by the moon on parts of the earth. We can divide the earth into three areas: areas closer to the moon has the strongest attraction, area's far from the moon are turned away, the weakest, and then there are the parts Sharing is sexy