Historical Examples. 1  I do not contest the truth of the principle of continuity on which this view is based. 2  The continuity of nature does not fail saving for extraordinary instances. 3  The processes of his mind are characterised by continuity, consistency, and a kind of gathering intensity of movement.
In most places, two high tides and two low tides occur daily. Tides happen because the moon's gravity is pulling on the Earth and its oceans. The oceans are fluid and can move more than the land, so they move towards the moon. As the moon revolves around the Earth, it creates high tides and low tides.
About every two weeks. Neap tides occur when the gravitational pull of the moon is perpendicular to the gravitational pull of the sun. In the graphic above, we see a month animated. We can see that there are about two spring tides and two neap tides every month, with about a week in between. Read more about Neap and Spring tides here.