TIDE physics edu

physics in the article today, I elaborated on the tide

A tide is the periodic rice and fall of the sea surface.
Tide result from the gravitational attraction of the moon.

The principal couse of tide is the moon being much nearer to the earth then the sun so that the world’s oceans flow in response to the moon’s pull.

Because the moon moves around the earth, the highest high tide and the lowest high tide can occur.

a. The highest high tide if the Eart, Moon and Sun are in the same line (if seen from North). The highest hige tide is often called luna tide.

b. The lowest high tide accurs if Eart, Moon and Sun make a right angle (90o). the lower high tide is often called a quarter tide.