how does temperature affect the speed of water?
154119
Water is a Newtonian fluid, meaning its shear stress is linearly proportional to rate of shearing strain. Agitation will not affect its viscosity. Pressures will not affect it either unless they are extremely high.\n\nThe viscosity of water generally decreases as temperature increases. Water at 32ºF has an absolute viscosity of 1.794 cp (centipoise). At 200ºF, its viscosity will have decreased to .305 cp.\n\nThis means that water will flow slightly more easily at higher temperatures.\n\nFor some mathematical models, check out this link:\n\nhttp://en.wikipedia.org/wiki/Temperature_dependence_of_liquid_viscosity
114884
Hot water does not freeze faster than cold, all conditions being the same, such as altitude, air pressure, and amount of cold applied to the water to make the water freeze.
405810
Water has a special property, called Anamolous behaviour of water, and this property is seen only in water.\nWater's melting point is 0 degree Celsius, and you might think that the volume increases if further heated above 0 degree celsius, and you are wrong ! Only in water, the volume of water decreases until it is heated to 4 degree celsius, and then it starts increasing, unlike any other liquid (in other liquids, replace 0 degree by their melting point). Therefore, volume of water is least at 4 degree celsius and not at 0 degree celsius. This property of water is called Anamolous Property of water or Anamolous Expansion of water.\n\n--\nWWW - Weird & Wonderful Web - http://www.kudige.blogspot.com/
810751
The speed of sound in water (including seawater) depends on several factors, but most important is the the temperature of the water.  By measuring the time it takes for an acoustic signal to travel from a source to a receiver, one can determine the average temperature along the path followed by that sound signal. (Other factors that include sound velocity or travel time include salinity, pressure (i.e. pressure-induced changes in density), and ocean currents.)  By measuring the average temperature along many different paths, one can reconstruct a 3-dimensional "map" of the temperature distribution in the oceans.  \n\nBy following the changes in temperature over time, one can detect long-term changes in the temperature distribution and hence average temperatures of the oceans.
1187086
Higher temp = faster diffusion. Higher temps give the atoms more heat, which is basically a faster rate of the atoms vibrating. If they move around faster, they'll obviously diffuse farther in the same amount of time. Next time, do your own homework
1019637
yes sound does travel faster in denser mediums, but when the temperature of a medium drops, then the viscosity of the medium drops as well, then even though the density would get higher, the sound would still slow down, because of the now less viscous medium.\na hotter medium would be more viscous then a cold one, therefore, sound travels faster in hot water, then it does in cold water
666461
Of course taking the temperature of anything will alter the temperature that you're taking. The question is how much. For most cases, the change is negligible, so we can take the measurement as the temperature of the object (here the object can be water).\n\nThe reason that there is a change to the temperature is because when you add your measuring device (here it would be a thermometer) to the water, the thermometer will either absorb or release some amount of heat, depending on its relative temperature to the water. The laws of thermodynamics states that a system will always seek to reach a state of thermal equilibrium (meaning that hot things will release heat to cool off, and cold things will absorb heat to warm up).
669582
The body regulates our internal temperature in reference to an outside source (in this case the warm water). Your blood vessels going to your extremities are dilated, you sweat slightly more, and in some cases metabolism decreases because it produces heat. \n\nBy the way, the water does cool when it comes in contact with our body. The first thing that happens is it evaporates, because it uses the heat from our body to go from a liquid to a gas (evaporation). Then, it condenses (goes from gas to a liquid) back down to the bathtub because the air temperature is cooler than our body.
432623
It depends on the temperature of the water and the air but if they are the same, then the ice in the water will melt faster because water is a better conductor for heat.
516732
Well, the temperature doesn't matter. What does matter is the concentration of the water outside of you. It's osmosis/diffusion. You have water in your body and there's water outside of you; but the water outside gonna have a higher concentration that the water inside of you. This is when you take into consideration that the water outside of you  will include dirt(some salts) and other chemicals like from your soap or shampoo, which is why it's concentration is higher. The whole process of your fingers shriveling-up is because the water inside of you leaves your body in attempt to balance the concentration outside to equal yours.
541181
See this answer.  Dig into the citations for the reference articles in them.  The second also has references.\n\nHot freezes faster in many cases, given certain controls such as same amount of water, same size and shape container, standard pressure etc.  There  is at least one experiment showing that water at 90 degrees C will freeze quicker than water at 18 degrees C.  This is significant since one side is quite close to boiling and the other is basically room temperature.\n\nIf you are not a high school student, I would look up linear programming ( a branch of algebra not computer science) and develop a sensitivity analysis to determine the impact of various effects.
797871
raising the temperature. like with a saturated solution of salt-water, if you reise the temperature the water will take in more salt. it's the same with other thing too.
314230
yes...if you change the temperature....the density of water for example changes with its temperature....
904337
I did an experiment on the mpemba effect for physics.\n\nhttp://www.higher-designs.com/school/water.jpg is a screen cap of my results.\n\nThe temperatures at the top are the starting temperatures.
101455
>>>>>at 4 degrees above its freezing point, water sinks.\n\nThis is true.\n\n>>>>any lower, and it begins to freeze, forms crystals, and floats.\n\nThis is not true. Water begins to freeze at 0oC, not at 3.9oC or even 1oC.\n\n>>>>any warmer, and the molucular action makes it less >>>>dense.\n\nThis is not true. Water becomes less dense at warmer temperatures due to kinetic motion impeding the formation of hydrogen BETWEEN molecules.
726971
h2o has a higher specific heat, meaning it takes a greater amount of energy to change the temperature of the h2o than the metal.  That is why it takes a long time for lakes to freez, ect.
46526
it doesnt, however the energy is lost faster in hot water than in cooler water.  The rate at which all water freezes is the same.