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Where does the water come from at high tide and where does it go at low tide?

2007-12-17 00:28:56 · 14 answers · asked by Anonymous in Science & Mathematics Weather

how come the moon doesn't affect other stuff like the air?

2007-12-17 01:06:26 · update #1

14 answers

The following information was extracted from the following site: http://www.franksingleton.clara.net/atmospheric_tides.html

Both the sun and the moon exert a gravitational pull on the atmosphere. The moon has, by far, the smaller observed effect. Careful analysis of pressure data shows a lunar tide of about 0.09 hPa (mb) near the equator, decreasing to the north and south. This is about 0.01% of the total pressure.
The solar "tide" is really a combination of a small gravitational effect and a much larger heating effect. Near the equator the effects can be seen clearly on barographs as an oscillation of about 2 hPa either side of the average pressure. Maxima occur at about 1000 and 2200 hours local time with minima at 0400 and 1600. In mid-latitudes the variation is about 0.7 mb and is usually hidden by
the much larger effects of weather systems.
The effects of the solar tide upon winds and weather systems are very small amounting to small fractions of a knot in wind speed. At great heights in the stratosphere winds due to solar effects can be very large but still have negligible effects on our weather.

In the oceans you may think of the tides as the sloshing of the oceans first towards the shore producing high tides and then reversing itself and going back out to sea, producing low tides.

2007-12-17 06:15:34 · answer #1 · answered by 1ofSelby's 6 · 0 0

Nobody told you where the water goes yet !
Here is the answer.
1/ The moon only pulls the sea 6 to 12 inches.
2/ Coastal shapes multiply this effect.
3/ The tide often goes around in a circle just like a coin that you spin, rocks in a circle just before settling.
4/ The water is thus moving in a big slow wave every 12.5 hours, round and round.
5/ Some coastal shapes multiply the height of the 12 inch tide, by narrowing it to a point, this happens in estuaries like the Bristol channel in the UK.
6/ The center of a tidal zone like the North Sea hardly rises and falls at all, these points of minimum motion are known as Amphidromic points.
Experiment
Get a circular bowl and half fill it with water.
See if you can rock it in a circle to create a wave going around the edge, instead of side to side.
That is how many tides flow, taking 12.5 hours to complete one circuit.

2007-12-17 19:40:06 · answer #2 · answered by eastanglianuk1951 3 · 0 0

The gravity of the moon pulls the water towards it; the water goes towards to moon, so when it is high tide one one side of the planet, it is low tide in the other.

2007-12-17 08:34:16 · answer #3 · answered by Fred S - AM Cappo Di Tutti Capi 5 · 0 1

Tides are caused by the moon, what happens is the moons pull causes the water from the other side of the world to go wherever the moon is, and when it's night here the water from the other side of the world is over here.

2007-12-17 08:33:30 · answer #4 · answered by rover_dude 3 · 0 1

Low tide here , high tide in france or holland. gravity of the moon pulls the water towards it so as the moon moves across the sky the tide moves towards france ,when the moon has gone furthur it loses it influance so the tide rushes back here.

2007-12-17 08:32:27 · answer #5 · answered by The Ghost 7 · 0 1

Tides are caused by the gravitational effect of the moon.

2007-12-17 08:31:42 · answer #6 · answered by Jack 4 · 0 1

THe water comes from the sea. Its there already, the moon and its gravitaional pull on the water makes the tide.

2007-12-17 08:32:56 · answer #7 · answered by magdalena 4 · 0 1

the gravitational pull of the moon-
when a tide is out at one beach- the tide is in at another

2007-12-17 08:36:37 · answer #8 · answered by Jade 6 · 0 1

Moon's gravitational pull(to some extent,sun's gravitational force also) causes the tides.The water does not go any where;it simply changes its shape(elongated along a diameter and compressed along another diameter perpendicular to the earlier one) due to the pull.

2007-12-17 09:28:59 · answer #9 · answered by Arasan 7 · 0 0

The Moon is using a gravitational force on the water. Or it's controlling it. Oh I don't no!!

2007-12-17 12:01:14 · answer #10 · answered by ? 3 · 0 0

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