Brillients listen here again. Hay why only the Circular waves appears in water?
488316
It is the transfer of energy through a medium, in your question, water is the medium through which the energy is absorbed and dissipated. The mass in motion crosses the barrier of a gas (air) and is transferred into a Liquid (water). The two states of matter of three possible (solid, Liquid & gas) collide and the energy is read in a sine. It is no different in understanding a sine wave pictuered on a scope when we study electricity. The water shows one half of the wave, the other is in the air and that you can not see. Energy moves faster via the gas. If you watch a detenation of explosives such as in the minning of ores, the shock wave can be seen racing along the gound from the epic. The sublevel absorbs the energy and fractures the Earth. The above ground energy rattles your head. Since the energy is transfered equally in all directions is the "why " for the circle. If you really want to put some thought into this...it explains why Galixies and Solar systems are flat disks in space.
744888
Actually, the most recent scientific explanation for this is "Rogue Waves."  I read this in a recent article in the Science Times section of the NYTimes.  I will try to find the article for you.\n\nBut, basically, due to the geography of this area, the water temperature, wind currents & importantly ocean currents, this area is more prone to huge Rogue waves (which can often be 60-100 ft in height and can occur even with normal (i.e. non-stormy) weather patterns.  (and with no warning).   They have recently installed some monitoring devices in these areas to try to warn ships/cruisers that travel in these areas.\n\nEdit:  These articles should help you + they have some cool pictures.\nhttp://www.damninteresting.com/?p=701\nhttp://www.physorg.com/news77381892.html\nhttp://www.nytimes.com/2006/07/11/science/11wave.html?ei=5090&en=d5cdc1cbc2182342&ex=1310270400&partner=rssuserland&pagewanted=print\nhttp://en.wikipedia.org/wiki/Freak_wave
93061
I didn't give it a thumbs down, and I think the answer is fine as far as it goes.  However, one problem that I noticed is that you have a circular definition.  You said electromagnetic waves are oscillating electric and magnetic waves.  I assume you meant to say electromagnetic waves are oscillating electric and magnetic *fields*, which is correct.
869017
Sound waves can be heared but cannot be seen, only light and colors are seen. We can only see the motions, oscillations and vibrations on the objects caused by sound waves.♥\n\nCheck out these links:\nhttp://www.du.edu/~jcalvert/waves/soundwav.htm\nhttp://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l1a.html\nhttp://www.du.edu/~jcalvert/waves/soundwav.htm
278787
in waves, therefore, in order to be transmitted it requires some medium to transmit the waves in. That's why sound can't travel through a vacuum such as outer space, for example
181822
Sound travels in a wave.  Actually travels best through a solid.
211442
Because there is no air - only a vacuum.\n\nSound travels by making waves in the air.  Without air (or some other medium, like water) sound can't be transmitted.\n\nRadio waves, on the other hand, travel through a vacuum without trouble.
1146216
The water isn't flat... The curve is soo subtle you can't see it... that is in the oceans.  Water takes the shape of what ever container it's put in and levels itself off based on the level of gravity around the container... If you put water in a container and then move that container to zero gravity.... the water will not stay in the container or flatten out.  The reason why water curves around the earth is because the earth's gravity is holding it to the curve of the earth... does that make sense??
1063614
It is not air that takes a spherical shape in water but rather the water forces it to take that shape. This is because of surface tension - the same reason why drops of water tend to be shperical. It is the state with least potential energy implying the most stable state.\nIn case of smoke in air, the same thing does not happen as neither air nor smoke does not have any surface tension (being gases, rather mixtures of gases, they are not cohesive unlike water or any liquid for that matter). The simply diffuse into each other randomly (and aided by air currents) however, smoke being a hot mixture of gases, tends to rise higher, hence the wierd upgoing patterns formed by smoke.
598695
Refraction\nAs the light enters the water from the air, it bends\nthe bent light shows a kind of corona around the bulb\n\nin air, the light doesn't bend, so you just see the light inside the bulb
285215
If you are in an airplane they are circular.  We usually can't see the bottom because there is no rain to reflect the colors in the earth.
461903
It happens in the atmosphere too, but to a lesser degree.\n\nWater (even pure water) reflects, refracts, and absorbs light.  As light passes through a body of water, some of the light is reflected back, some of the light is refracted (bent), and some of the light is absorbed (leading to warming of the water).  The more water the light has to pass through, the more of the light that is reflected, refracted, or absorbed.  So the deeper you go, the less light will reach you.\n\nTo simplify, just consider absorbsion.  If a cloumn of water one metre deep absorbs 50% of the light that passes through it, then the light at the top of the column will be 100% and at the bottom only 50%.  Add another column of one metre under the first column and it will absorb 50% of the light that passes through it.  It has 50% of the total light available at the top, so only 25% remains at the bottom.\nAnd so on.
251505
When water falls, it becomes a mist. Then light refraction occurs and the wave length changes. It looks white because it scatters the light. I also creates rainbows because of the light refraction.
988375
I think it has to do with when lightening hits the surface of the water it dis purses, and weakens!!  The lightening stays on the surface!!  Have a Great Day!  MB
219810
It's nothing to do with the moon. When any wave reaches the shore, it slows down, piles up higher and higher, and if you observe carefully you will see it draws some of the water in front of it backwards to help fill the wave crest before it breaks. The same thing happens on a very much larger scale in a tsunami. The "tide goes out", then comes back with a vengeance. Since tsunamis can consist of more than one wave, this out-in cycle may repeat a few times.
284940
Totally false.  Waves do occur in ponds and lakes.\n\nIn fact, any really experienced sailor can tell you that when the wind is blowing strongly, shallow waters are more dangerous thaan deep ociean waters.\n\nFifty foot waves can and do occur in the Great Lakes.  Many ships, boats, and lives have been lost, especially during November.\n\nThe big waves in the Great Lakes come crashing ashore, against piers, and against the shoreline ice barrier that forms during winter.\n\nThey are as spectacular as many typical ocean waves, but it is true that you can get even bigger waves from the ocean, such as the ones used by surfers in Hawaii.
968111
Please re-submit your question explaining what medium the waves propagate in.\nDoes ELF refer to Extra Low Frequency radio waves in your question?