what does sand do to help snow melt?
85508
Sand provides traction on snow it is true. However, sand also changes the albedo of the snow, and does in fact melt the snow faster by changing its color.
348795
Because sand has such a high melting point that should a spark come from the candle the sand will absorb the heat rather than burn.
1170597
It takes time to transfer the thermal energy to the snow.  Snow also has an insulating effect on lower layers of snow, making it difficult to transfer heat there, making snow more persistent than would be expected.
37373
Sand. Have you ever walked in sand when it was scalding hot outside, and had to find grass and soil to walk in to cool off your feet? I have..sand is definately hotter.
570527
probably partly because white reflects heat\n\nthey probably also help keep sand and dust in the air out
349772
Sand in the desert cannot absorbe heat. It just reflects what is there in the environment. this is why it is very hot during he day when the sun is out as it reflects all the heat that is getting focussed on it. And when the dusk falls, since sand has not been absorbing the heat during the day it becomes cold as soon as the environment around loses on temprature. This is majorly due to the no absorbing property of Sand and scarcity of water. \nTry this, You you can keep a part of the sand in the desert wet for the day that part will be much less colder at night and much less hot during the day becasue water will absorb heat during the day and make it feel cool as it is not getting reflected immediately and reflect heat in the night making it a little warm.
579981
Iron and water.  Just wash the sand off the iron.
330025
it's frostbite. the water melting off the ice cube is because salt lowers the freezing point and so the water on your skin is very cold <32 so it freezes the skin. kinda like making ice cream except more painfull
256506
Super heat sand in a controlled environment or mold.  The glass will need to cool slowly over the course of 12-18 hours or more to keep from cracking and breaking.
154519
The most common (and cheapest?) material used for highway safety in winter weather is sodium chloride.  Because of its affect on the environment, especially water supplies, calcium, potassium and magnesium chlorides are used as alternatives for deicing in many locals.
58288
Well, the first question should be "Why is snow white?"  \n\nA beam of white sunlight entering a snow bank is so quickly scattered by a zillion ice crystals and air pockets that most of it comes zinging right back out of the snow bank. No one wavelength is preferentially absorbed or reflected, so snow is essentially the color of the sunlight reflecting off it -- white. \n\nThen, when the snow melts...it's a clear(ish - depending on the purity of the snow) liquid, and is absorbed into the surroundings, or maybe it evaporates.  Voila!  No more color.
776338
to spread salt early is a waste as cars and traffic will just throw it off the road.  salt is laid after snow or ice falls to melt the ice.\n\nmore and more its becoming common to salt brine the roads prior to a snow coming.  this is done with a mix of salt water and is laid on the ground normally in 5 straight lines.\n\nto a test of your own and you'll see why they salt it afterwards and not before with actual rock salt.\n\ntake a plate and put a layer of salt on it then lay an ice cube on it.  take another plate and lay an ice cube on it then salt over top of it.  which melts faster?
66544
Salt will lower the freezing point of water. That is why the use in on the roads in winter.
656503
It doesn't.  Ice melts more slowly on a colder surface because when ice melts it must draw heat from the surrounding environment, and when there is less heat available it takes longer.\n\n____________\nEdit: as a college science major, I can tell you it simply doesn't work that way.  However, there are a number of factors besides temperature that effect ice melting.  For example, if the piece of ice on the colder block was considerably thinner than the ice on the warmer block the one on the colder block might still melt faster.  In biology, we sometimes melt small amounts of liquid on ice because bad things happen if they get too warm, and two microliters of frozen liquid on ice generally melts faster than ten mililiters in warm (about 98˚F) water.\n\nAnother factor that effects melting point is solutes dissolved in the water before it was frozen.  Salt water freezes at a lower temperature, and consequently melts at a lower temperature, than pure water (that's why the salt the roads in the winter).  If there were a lot of salt dissolved in the piece of ice on the cold block, then depending on the temperatures of the two blocks, the one on the cold block might melt faster.\n\nIt's also possible that one or both pieces of ice weren't water at all.  There are plenty of clear liquids out there that melt at various temperatures.  A compound with a lower freezing point will tend to melt faster, possibly even at a lower temperature.\n\nAnother factor is the starting temperature of the ice.  In one of the biology labs at my school we have a freezer that's at -80˚C, and the normal ones at 4˚C.  If you take a piece of ice out of the -80˚C freezer and one out of the 4˚C freezer, they're both frozen, so they're both ice, but the one at -80 is a lot colder, and is going to take a lot longer to melt, even at a warmer temperature, because it has to warm back up to 0˚C before it can even start to melt.\n\nBut, of course, the obvious explanation is that either your teacher lied to you, or you lost track of which block was which at some point in the demo.
384952
heere are several examples of what is used to melt ice on the roads
94909
It actually has to do with the dryness of the air between the storm and the area just above the ground and the difference in pressure between the storm front and the storm itself. As the super low pressures meet the moist air in the storm, they cause it to equalize rapidly, which, as we know from our nitrous oxide cans, causes the temperature to drop rapidly. This is what needs to happen to form ice crystals, not just ice. As the snow falls to the air close to the earth, it will melt back to rain or fog if the air below is too moist. The UK, like Louisiana and Florida, is known for having extreme humidity levels and low altitude. The air on the ground can be below zero, while the air below the storm (where the snow falls into first) may be wet and warm. Another thing that may affect snowfall is that the pressure close to the ground causes the snow to quickly expand and vaporize into fog and invisible humidity. This is where your altitude comes into play. Lower altitude, higher pressure. Altitude may not matter, though, if the air is dry and cold enough, just below the storm. It snows in some deserts where air is dry (which loses heat easily) and the altitude may even be sea level.
835913
probably, think about it. the heat coming from it will rise and will malt any accumilating snow. the only reason it manages to accumilate in the streets of NYC is because they have MUCH more snow than we do here in the UK.