What makes the ,TIDE in water,GO,  in&out???
465766
TIDES 101:\n\nThe earth's water is fluid. It moves easily.\n\nThe earth spins once on it's axis in ~24hr period.\n\nAs the earth turns, it literally spins through the water. This causes it to bulge up along the coastlines. This is called the tidal bulge.\n\nDepending on earth's proximity to the moon & to some degree, the sun, we will either be in or out of the bulge.\n\nIf the the moon & the sun are lined up on the same side the tidal bulge will be greater than normal.\n\nIf the moon is at a right angle in relation to the sun & earth, then the physical forces cancel each other out & the tidal bulge isn't as great.\n\nBelow is a diagram to go along w/ the info above.\n\n:)
432841
High & low tides occur because...\n\n1. Gravitational pull of moon & sun on the earth's oceans... Positions of the sun & moon in relation to the earth. When the three are at right angles the physical forces cancel each other out & the tidal range won't be as great. When the sun/moon is opposite or on the same side, the tidal range will be much greater.\n\n2. Physical shape & position of coastlines. Some coasts experience diurnal tides (two high & two low per 24 hour period). This is most of the Atlantic coastline. Some only have one high & one low tide per day b/c of this. Tidal range can be affected too by this. One particular place w/ extreme differences in high & low tide is the Bay of Fundy in Canada.
176407
The tides are mainly influenced by the psition of the sun and moon relative to the earth and their gravitational pull, however the tides are also affected by the flow of water around geographical features it is such a complex system that tides are predicted by past measurement rather than a predicting formulae.
367651
Water is not wet, it makes things wet!
1134387
While the high tide is coming in the waves will be bigger with the "tidal push".  The morning usually has better shape unless you have afternoon offshore winds.  Winds that blow onshore tend to flatten the waves and ruin their shape.
64876
Buoyancy is simple.  If the weight of the liquid moved by insertion of an object into the liquid is greater than the weight of the object, it will float.  That is why the size of ships are measured in displacement.  The "Displacement" refers to the weight of water that is "moved out of the way".\n\nThink of it this way - take two identical spheres with the exact same outer material and thinkness.  One is hallow, and one is filled with lead.  Of course, we know that the one filled with lead will sink?  Why?  Because it weighs more than the water that is being moved out of the way.  How do you make it neutrally bouyant?  Simply fill it with enough lead that equals the weight of the water displaced by the sphere.\n\nThis is called Archimedes Law of Bouyancy.  Google/Yahoo search it and you should find some illustrations to help explain.
518817
lunar activity couses the tides with the gravitational pull
947034
An estuary occurs when a fresh-water river meets a salt-water sea or ocean. Typically, the resulting area is a marshy mix of shallow water and sediment, interspersed with low-lying hummocks of soil that may (at times) be above the water's surface.\n\nBecause ALL bodies of "standing" water (seas, lakes, oceans, ponds, pools, etc) are affected by the moon such that a tide is created, then any other body of water (such as a river) that intersects directly with the standing water must also be affected to some extent.\n\nIn the case of an estuary - yes, it is affected by tidal action.\n\nOf course, the larger the body of standing water, the larger the tidal effect.
383007
Yes, the first part is true.  Why does that make tides more "believable"?  \n Any two gravitaionally-bound objects will orbit around a common center of gravity.  (which is closer to the more massive object).
911979
Pools of water that form near the ocean due to shallow dips in the landscape. When the tide goes out the water is trapped in these small pools. When the tide is in they are just another part of the ocean.
80464
the very fundamental: the human body floats in the water, try this yourself by staying calm (and don't cheat by stepping on the bottom! lol). then slowly try to move your hands and feet in order to push your body towards one direction. Needs a tiny bit of practice but you'll get it. It's very easy! good luck!
603269
The tide is governed by the motions of the Moon orbiting Earth, and Earth orbiting the Sun, Each of which has a gravitational influence on the Earth. When the Moon and Sun are in line, (ie) new Moon, the tides are higher than usual.Then, when you take into account the geographical situations along coast lines, like gulfs, inlets, etc. the tidal effects can be more pronounced.
159665
When swimming in the ocean, have you ever wondered why you tend to be carried down the beach, away from your towel in an undertow? \n\nThe answer is simple. This process is called longshore drift and is generated by wave and current action.
900505
Tides mean that the water is deeper on the parts of the Earth facing towards and away from the Moon and shallower elsewhere.  There is the same amount of water, it is just redistributed.  When there is high tide in Europe, its low tide on Americas east coast (about 90 degrees away).
500032
The Pull of both the Moon & the Sun, Yes the sun too has a pull & depending on where both are depends on how strong the pull is hence the different types of tide but the wave itself probably has more to do with the weather, ie strong winds etc.
885028
There are different occurances in nature that are labelled "Red Tide". \n\nOne is caused by an over abundance of plankton in the ocean. This makes the water stinky and could make you sick if ingested.  \n\nThe other is caused by chemicals used by farmers to get rid of pests. It drains down into the ground water and eventually ends up in the ocean. It kills just about anything living in the water.
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3 hours. \n\nIf it takes 12 hours to go from low tide to high tide and back to low tide, that means it takes 12 hours to go from 1.0m, to 3.0m and back to 1.0m.\n\nSo in half of 12 hours= 6 hours it goes from 1 to 3\nAnd in half of that= 3 hours it goes from 1 to 1.5.\n\nTry drawing a wave starting from the lowest point (1.0m) going to the highest point (3.0m) and coming back to the lowest point (1.0m). \nDraw a line through where it is 1.5m, which is half way between 1m and 3m. If the whole wave is 12 hours you will see that at a quarter of twelve hours the wave crosses the line you drew for 1.5m.