What is a tide?

Defining a Tide00:00:15

A tide is not merely the rise and fall of ocean water. It's the movement of water resulting from intricate gravitational and rotational interactions among the Earth, Moon, and Sun.

Formation of Ocean Bulges00:00:40

The combined gravitational and rotational forces cause the oceans to bulge outwards, primarily in the direction of the Moon.

Earth's Rotation and Tides00:00:49

As the Earth rotates on its axis, it moves through these water bulges. The solid Earth rotates faster than the water bulge, meaning the Earth's surface moves towards the bulge, creating the appearance of rising water.

The True Nature of Tidal Movement00:01:29

From an observer's perspective on Earth, it might seem as if the water moves towards the land. However, it is actually the Earth's surface that moves to meet the stationary water bulge.