2007-10-07 07:35:52 · 3 answers · asked by Fizz 1 in Science & Mathematics ➔ Earth Sciences & Geology
There is a high tide twice during every 24 hour period. The tide rises due to gravitational pull of the earth's ocean water by the moon.
2007-10-07 08:08:51 · answer #1 · answered by Rick B 2 · 0⤊ 0⤋
The moon's gravitational pull on the earth's water creates a high tide be making a "bulge" in the water (oceans) at the point closest to the moon. At the same time, on the opposite side of the earth another "bulge" is formed (wave theory related to Newton's theory of equal and opposite forces.
So now you have two "bulges" or high tides. As the moon revolves around the earth these "bulges" rotate too. Remember, they are caused by the gravitational pull. So where the bulges appear is a high tide. Two bulges per moon's revolution equals two high tides per moon's revolution.
Also remember the moon does NOT revolve around the earth exactly once per day. That is why the times of the high tides change from day to day.
2007-10-07 09:00:47 · answer #2 · answered by Smoker06 6 · 1⤊ 0⤋
THE NUMBER OF TIDES AND THEIR DURATION DEPEND ON THE EARTHLY LOCATION AND THE GRAVITATIONAL PULL OF THE MOON AND THE SUN AND CAN BE AS MANY AS 4 TO 6 DAILY. SEE THE ATTACHED LINK.http://www.physicalgeography.net/fundamentals/8r.html
2007-10-11 07:04:26 · answer #3 · answered by Loren S 7 · 0⤊ 0⤋