what causes ocean currents?
89038
Also pressure from cold water sinking in some areas, thus causing it to rise in others, such as the Peruvian coastline (produces La Niña), the ac5tion of prevailing winds on both warm and oold surface waters.  Also water entering the oceans from large rivers such as the Amazon and Mississippi, and also salt concentration (dense water sinking).\n\nTidal currents are caused by the combined effects of the sun and the moon, the strongest when their effects combine.\n\nHeat and cold also affect water density, causing the ocean suface to be higher in hot areas and depressed in cold areas.\n\nGenerally these effects keep water circulating.  Some lack of movement is possible where all are missing from a given area, such as the Sargasso Sea.
531052
Guessing......red tides in the ocean are caused by an algae when conditions are right (low oxygen i believe) It may be the same in a waste water stabilisation pond, they might use a similar algae to help break down the waste materials.
587505
There are a number of currents in the ocean in which the water temperature is different from the surrounding area.  The most famous of these is the Gulf Stream that brings warm water from the tropic areas north off the East Coast of the United States and then across the Atlantic to Europe.\n\nNote that this movement is clockwise if you look at it from space.  Of course, this also means that on the other side of the ocean, cold water will move south to complete the circuit.\n\nNow we go to California.  There is a cold current called the California current that brings water from the area off Alaska in the same manner.  This cold water is also full of nutrients which is why there are the kelp forest and abundant wildlife.  It moves in the same manner as the Atlantic Ocean example.\n\nHope this answers your question.
865423
Weather is caused by so many different things. to name a few. atmospheric pressure, ocean currents, air temperature, solar output. i sugest you do some research online
1167649
Not quite! The direction the water goes down the plug-hole depends on whther you are in the northern or southern hemisphere. It has nothing to do with magnetic fields, but everything to do with the coreolis effect, which is caused by the direction in which the Earth is spinning.
264363
Good thinking, unlike some of the answers here. Anything put in or on the water displaces water and makes the water level rise. The ocean is so huge that you could not measure it unless the rock was so large you could not move it.
1163669
Ocean Waves are mechanical waves that propagate along the interface between water and air; the restoring force is provided by gravity, and so they are often referred to as surface gravity waves. As the wind blows, pressure and friction forces perturb the equilibrium of the ocean surface. These forces transfer energy from the air to the water, forming waves. In the case of monochromatic linear plane waves in deep water, particles near the surface move in circular paths, making ocean surface waves a combination of longitudinal (back and forth) and transverse (up and down) wave motions. When waves propagate in shallow water, (where the depth is less than half the wavelength) the particle trajectories are compressed into ellipses. As the wave amplitude (height) increases, the particle paths no longer form closed orbits; rather, after the passage of each crest, particles are displaced a little forward from their previous positions, a phenomenon known as Stokes drift. A good illustration of the wave motion is given by *Prof. Robert Dalrymple Java applet
219933
Mid Atlantic Drift. AKA Gulf Stream It pushes warm water from the gulf of mexico up into the waters surrounding the UK.
420013
Yes there are tides on the open ocean.  The change in tide can greatly effect the size and frequency of waves.  It can also make storm waves worse.
40679
In the southern half of the ocean the Humboldt Current flows north along the coast of South America. The cold mineral rich waters support many millions of small fish, which are eaten by larger fish and seabirds.\nAt regular intervals a huge area of the Pacific becomes warmer. Because warm water rises above cold, the sea-level increases. This change in temperature and level causes an alteration in the pattern of the winds. The warm water travels across the Pacific at 100 kms a day. This phenomenon, known as El Nino, deflects the Humboldt Current. 1997 saw the highest temperature recorded of this warm water during the last 150 years.
819382
Hadley circulation of the atmosphere and ocean currents.
879212
Ur additional information is correct. The moon's gravity is what causes Earth's oceans to form tides (moon's gravity vs earth's gravity). Since our bodies are composed of 80% water and a human's brain is submerged in (biological) liquids, we are affected just as well.
570474
Convection current is caused by the expansion of a liquid, solid, or gas as its temperature rises. The expanded material, being less dense, rises, while colder, denser material sinks. Material of neutral buoyancy moves laterally. Convection currents arise in the atmosphere above warm land masses or seas, giving rise to sea breezes and land breezes, respectively. In some heating systems, convection currents are used to carry hot water upwards in pipes.\n\nConvection currents in the hot, solid rock of the Earth's mantle help to drive the movement of the rigid plates making up the Earth's surface.  \n\nHope this helps!
170108
"Tides are the periodic rise and fall of the ocean waters. They are caused by the gravitational pulls of the Moon and (to a lesser extent) Sun, as well as the rotation of the Earth."\n\nCheckout these site for more info:
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.
119438
A wide variety of wierd things would happen.  For one temperatures would increase more and decrease to lower values on the sunlit and shaded sides of the world.  Ocean currents and weather patterns would change dramatically.  Winds would blow directly toward the equator in both the southern and northern hemispheres.  Large circular currents called gyres which exist in all ocean basins would dissapear.  The tides would also be much different because the earth's rotation strongly influences tidal characteristics.
873513
"Ocean water is  a complex solution of mineral salts and of decayed biologic matter that results from the teeming life in the seas. Most of the ocean's salts were derived from gradual processes such the breaking up of the cooled igneous rocks of the Earth's crust by weathering and erosion, the wearing down of mountains, and the dissolving action of rains and streams which transported their mineral washings to the sea. Some of the ocean's salts have been dissolved from rocks and sediments below its floor. Other sources of salts include the solid and gaseous materials that escaped from the Earth's crust through volcanic vents or that originated in the atmosphere."