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.
Three basic tidal patterns occur along the Earths major shorelines. In general, most areas have two high tides and two low tides each day. When the two highs and the two lows are about the same height, the pattern is called a semi-. This map shows the geographic distribution of different tidal cycles.