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Actually, most thermal insulation materials like foam board and fiberglass bats actually used trapped air (or other gas) to provide insulation. If gases are not able to move (so called convection), they cannot transfer heat very well. Gases thermal conductivity is very low compared to solids or liquids. However, if gases are heated, they tend to move around do to density changes, called natural convection. Once the heat gas starts moving around, it is no longer a good insulator. But fiberglass bats (and blankets and winter coats) trap air within their fibers and prevent convection from occurring. Foam work in a similar way, except they generally contain bubbles of air (or other gas) that occur during the foaming process. Foams are not just plastic. Google Baked Alaska and find out how meringue can insulate ice cream and prevent it from melting while it bakes in the oven.
Wiki User
∙ 11y ago
Wiki User
∙ 15y agosaw dust and dirt
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Why wool is a good insulater?
I think thAT WOOL IS A GOOD INSULATER BECAUSE IT IS
Is cotton a good inslator?
cotton is a good insulater yes cotton is a good insulater because it adsorbs sound
Why is copper a good insulater?
Copper is not a good insulating material for either thermal or electrical conductivity. Copper is actually a very good conductor of both heat and electric current, hence its use in electrical wiring, circuit pathways, and heatsinks.
Why is glass a good insulater?
glass is a non conductor
Is silver a conducter or a insulater?
Conductor (a good one).
Is wood a insulater or conductor?
Wood is a very good insulator
Is a toothpick a insulater or a conductor?
Its a insulater
What does an insulater resist?
A thermal insulator resists heat transfer and an electrical insulator resists flow of electrons.it is heat,light,antiond mo
Ia carpet an insulater or an conductor?
yes, carpet is a good conductor!
What are the good things about thermal energy?
it heats your house and it makes you be able to cook
Which insulates heat the most paper cotton or aluminum foil?
aluminum foil is going to be the worst insulater, paper is a good insulater but not the best, so the best is cotton.
Why is foam a good insulater?
It clenses the germs from your skin and kills all dirt
