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.
These are called spring tides, a common historical term that has nothing to do with the season of spring. Rather, the term is derived from the concept of the tide springing forth.. Spring tides occur twice each lunar month all year long, without regard to the season. Seven days after a spring tide, the sun and moon are at right angles to each other. When this happens, the bulge of the ocean caused by the sun partially cancels out the bulge of the ocean caused by the moon.