use a metal container to keep a drink very full
yes
A polystyrene cup has low thermal conductivity, which helps to prevent heat transfer between the drink and the external environment. This insulation helps to maintain the temperature of the drink for a longer period of time, keeping it hot or cold.
You can keep a cup cold by using a double-walled insulated cup, adding ice cubes, or placing the cup in the refrigerator or a cooler. Additionally, using a coaster or a sleeve can help insulate the cup and keep it cold longer.
Styrofoam
A double-walled insulated cup made of stainless steel or vacuum-sealed material will keep drinks cold the longest by preventing heat transfer. Look for a cup with a lid to further maintain the temperature.
Of Course
styrafoam.
a type of cup that will keep a drink warmer is a thermos, you can get them in many different sizes (cup sizes). they can be found in any household goods stores even woolworths.
Not for long.
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.
Heat cannot travel through the foam material so the drink stays well insulated inside the foam cup.
No, a galss cup does not keep any drink warm long.