is water a good conductor of heat?

Answer 1

yes

Answer 2

Anyone who said it was a good conductor of heat was wrong.

Water is an awful conductor of heat.

Why do you think people go swimming on a hot day? Becasue the water temperature is cooler than the surrounding air temperature. It disperses heat so readily making it a terrible conductor of heat.

One method of conducting heat is a resistance to movement. For example take a piece of flexible metal and begin to bend it back and forth. It will grow hot because it is a metal and doesn't like to be bent, however water being a liquid doesn't resist movement at all so it doesn't readily conduct heat.

Answer 3

No, water is a bad conductor of heat.

Simple Experiment to Show that:
Sink a small cube of ice in a boiling tube of water by placing a coil of wire over it.
Heat the top of the water with the flame of a Bunsen.
A ‘heat shield’ of tin foil can be used to stop heat radiation.
Note that the water at the top boils but the ice cube is not melting any faster.
There is a difference of 100°C in the temperature over just a short distance.
Therefore water is a bad conductor of heat.

Answer 4

actually water can be a good conductor of heat and can also be a bad conductor of heat with explanation.
water conduct heat because of the impurity in it, there is no pure water that can conduct heat, this is the result of our fathers in science.

Answer 5

Pure water is a bad thermal (heat) conductor, because it has one of the highest known specific heats. Specific heat says how much heat it takes to raise the temperature of a certain amount of something. It also says how quickly it can lose heat and temperature. Good thermal conductors (most metals) have a low specific heat, meaning they easily transfer heat because they easily gain heat in a hot area, and lose it quickly in a cool one.

For instance, on small islands, the climate is moderated by the ocean temperature. Even though it's salt water, the ocean is still mostly water, so it takes a while to heat and cool. So the land surrounded by it takes on temperatures similar to the ocean, because the ocean can take alot of energy without heating up, and lose alot without cooling off.

Water, however, is good for dissipating energy without changing temperature, it can handle alot of heat before it changes its temperature. It also has a high heat of vaporization, meaning it takes alot of heat energy to change it from liquid to gas. This is why sweat (mostly water) is effective at cooling people, it'll stay on their skin and take away alot of heat before it evaporates, and when it does, we feel cooler because of how much heat it took away.

Answer 6

you rarely bother with molecular thermal conductivity with a fluid, because the minute one bit of it is hotter than another bit, it starts moving, and carries the heat by convection. I'm not even sure how easy it is to measure its thermal conductivity directly.

If you want to know how fast heat will move in a particular situation involving fluids, the main questions you have to ask are:

- how is it moving? free, forced? laminar, turbulent?
- what's happening at the interfaces? is it boiling? freezing?
- is there any gunk in the fluid that will cause fouling?

the actual "conductivity" of the stuff is pretty irrelevant compared to those things.

BUT - there is one situation where differences in temperature will not cause motion, and in that situation, only molecular diffusion (thermal conductivity per se) will carry the heat. That's when the fluid is stratified - i.e., the deeper down you dive, the colder it gets. Certain parts of the ocean are like that, and in fact one of the answers above was correct in that heat does not travel particularly rapidly across those interfaces.

Domestic hot water storage tanks work on the same principle. If you run off half the tank, cold water comes in the bottom and the remaining hot sits on top. The hot will share its heat with the cold pretty slowly, and mainly through the copper walls of the tank, not across the hot/cold interface ("thermocline").

Answer 7

Surly water is not good conductor for heat, as u can not heat rainwater or distal water with out any salts added.

Answer 8

water conducts heat about 20 times better than air. THATS why you cool down quickly in water on a hot day. The heat is conducted away from your body more quickly. Thays also why it used to cool engines etc.

Answer 9

yes it. hence why its used for cooling so much. red hot metal into water cold to touch in seconds.have you got central heating? or used it for cooking. it also conducts electricity very well to.bad conductors of heat catch fire!!!!!!

Answer 10

once you warmth water at its backside, the water expands, will become much less dense, and rises, taking the warmth capability with it. it incredibly is CONVECTION. Water is an extremely solid convector of warmth capability. even nonetheless, once you warmth water on the fabulous, the warmth capability travels downwards interior the direction of the water very slowly. Convection would not ensue now, and the water is an extremely undesirable CONDUCTOR you may coach this by way of putting water in a attempt tube and putting a small lump of ice in it. Make the ice sink to the backside by way of putting a small weight on fabulous of the ice. Now warmth the fabulous of the water. you will discover that the water will boil on the fabulous, however the ice on the backside won't soften for a protracted time. the warmth capability can't incredibly return and forth DOWNWARDS by way of water as this is an extremely undesirable CONDUCTOR.

Answer 11

Not a bit of it.It takes a lot of heating up plus it cools dawn very quickly, energy is so wasted on heating water up and keeping it hot