A Styrofoam cup will do both.
The Styrofoam is an insulator, and, as such, it slows the transfer of heat between the system (the drink) and the surroundings (everything outside the cup)
If it is a cold drink, heat moves very slowly through the cup toward the drink.
If it is a hot drink, heat moves very slowly through the cup toward the surrounding air.
A styrofoam cup will retain the heat of a liquid longer than a typical plastic cup. This is because styrofoam material is comprosed of "foamed" polystyrene with millions of small air pockets. These air pockets serve as small insulators to slow down the heat conduction through the cup. For further information, suggest searching methods of heat transfer and Fourier's Law.
Styrofaom obviosly
Styrofoam is an excellent insulator.
Styrofoam is a better insulator of heat than plastic. The plastic allows the heat in and out and the cold in and out. The Styrofoam helps keep the heat in.
Styrofoam because it has a thick layer and is a good insulator.Paper and plastic are could alternatives but Styrofoam would work better, therefore glass would be the worst one to use because it would only keep it warm for a couple of minutes.
Putting the cup in the freezer keeps ice from melting. Those cups will slow down the melting rate, but if you've got ice at room temperature it's gonna melt eventually. Having said that, ice will melt slowest in a styrofoam cup.
They don't. It feels colder in your hand and on your tongue because it is the cold escaping the vessel at a faster rate than if it were a more insular vessel. The drink itself feels colder because the mixture is hydrophillic (wants to dissolve in water) and creates an endothermic reaction (absorbs the heat from around it).
styrofoam cups keep you beverages hot or cold because they are awesome
Styrofoam is used to keep drinks cold or warm.
Cold Cups or Keeping Your Cups Cold.
Styrofoam cups are generally the best at keeping hot drinks warm for a longer period of time. This is because Styrofoam is an excellent insulator, meaning it does not conduct heat well and therefore helps to keep the temperature of the drink constant. Paper cups and plastic cups are also decent insulators, but they are not as effective as Styrofoam. Glass cups are poor insulators and are not recommended for keeping hot drinks warm.
Styrofoam cups will keep a hot drink warmer for a long time. Insulated cups will also keep your drink warmer longer.
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Styrofoam is an excellent insulator.
styrofoam
Styrofoam cups because of what they are made up of
styrofoam is an insulator. It only works if thematerial stored is already cold.
Usually food it packed in Styrofoam to keep it cold (or warm)
To keep cold food cold or hot food hot. Styrofoam is very good insulation.