High tides and low tides are caused by the moon. The moons gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon.
What causes the timing of the tides?
Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart. This occurs because the moon revolves around the Earth in the same direction that the Earth is rotating on its axis.
What causes the second tide of the day?
The seas daily pattern of two tides is caused by a combination of the the Earths rotation and the Moons gravitational pull. The daily pattern of two high tides is a familiar feature of Britains seaside resorts, but its cause is surprisingly subtle.
What are the three causes of the tides?
The relationship between the masses of the Earth, moon and sun and their distances to each other play a critical role in affecting the Earths tides.