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The foam contains air, which is a poor conductor of heat.

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Q: How is a foam coffee cup a good insulator?
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Related questions

Is a foam coffee cup a conductor or a insulator?

Styrofoam, along with most other expanded plastics, is a very poor insulator of heat and electricity, thereby making a foam coffee cup a very good insulator.


Why is styrofoam cup a good insulator?

Styrofoam cup is a good insulator because it is coated with foam


Is a foam cup A good conductor of heat?

It is a good insulator of heat :)


What is a foam cup conductors or insulators?

Insulator


Is a plastic bottle a good insulator?

Yes A2: Yes, If it's a Foam cup. Not if it's simply a solid plastic cup.


What is induced When you bring a charged rod next to a foam coffee cup?

When you bring a charged rod close to a foam coffee cup, you induce.... Charge Polarization


What cup will freeze water faster glass or a foam?

I assume you mean the water in the cup. Foam is a better insulator than glass, so it should be the water in the glass cup.


What makes a paper cup a good insulator?

A paper cup is not the best insulator. A better insulated cup is the foam cup. However, it is better insulated than other materials such as a metal canteen, due the the heat capacities of the materials. Putting two paper cups to together acts as a decent insulator due to the air between the two cups. This is due the to air being a poor conductor of heat.


Why would a polystyrene cup be a good insulator of heat?

Polystyrene is a substance that when in a solid state has a lot of holes. These holes trap air inside them and since air is a good insulator, the polystyrene cup is a good insulator. *Air is only a good insulator when not moving, hence why a breeze feels cold.


Why would dry instant coffee jump around in a foam cup?

I suspect it has something to do with static electricity.


Why doesn't a foam cup get hot?

Because it has good insulation.


Can you tell me a good website to find one cup coffee brewers?

Individuals can find one cup coffee brewers. A good website is www.keurig.com/. Keurig coffee brewers are very popular and their coffee tastes really good.