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What of the following is an example of a thermal insulator A still air B gold C zinc D lead?
Wiki User
∙ 8y ago
Still air.
Wiki User
∙ 8y ago
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Is a Styrofoam cup the best thermal insulator?
No, Styrofoam is a good thermal insulator but not the best. Materials like vacuum insulated glass or foam materials with higher R-values are more effective for insulation. Styrofoam still offers decent insulation properties due to its low thermal conductivity.
Does argon have thermal conductivity?
Yes, argon does have thermal conductivity. It is a poor conductor of heat compared to other gases like helium and hydrogen, but it can still transfer heat through conduction. Argon is commonly used as an insulator in double-paned windows or in industrial applications where low thermal conductivity is desired.
Does ceramic absorb heat?
Ceramic is a good insulator and does not easily absorb heat. It has low thermal conductivity, meaning it does not allow heat to pass through easily. However, its surface can still become hot when exposed to heat sources.
Is Water an example of thermal conductor or insulator?
It is a conductor. While air has a thermal conductivity of 0.025 W/M-K, water has 0.6 W/M-K. Air, with this thermal conductivity, is considered one of the best isolators - practically, every isolation material (for construction purposes) is made up out of little cells full with air, so most of it's volume is actually air. Water is about 24 times more conductive. Which is still pretty bad compared to the thermal conductivity of aluminum, which is 237 W/M-K.
Is distilled water a good insulator?
Distilled water is not a good insulator as it still contains some ions that can conduct electricity. It has a low conductivity compared to tap water but is not a perfect insulator.
Is a Styrofoam cup the best thermal insulator?
No, Styrofoam is a good thermal insulator but not the best. Materials like vacuum insulated glass or foam materials with higher R-values are more effective for insulation. Styrofoam still offers decent insulation properties due to its low thermal conductivity.
Are bird feathers good insulators?
The birds think so, even the Penguins! Down is a very good insulator, for it entraps lots of air compared to its own weight. With any thermal insulator, what you are buying is still air, because for practical purposes, air is the best insulator.
Does argon have thermal conductivity?
Yes, argon does have thermal conductivity. It is a poor conductor of heat compared to other gases like helium and hydrogen, but it can still transfer heat through conduction. Argon is commonly used as an insulator in double-paned windows or in industrial applications where low thermal conductivity is desired.
Does ceramic absorb heat?
Ceramic is a good insulator and does not easily absorb heat. It has low thermal conductivity, meaning it does not allow heat to pass through easily. However, its surface can still become hot when exposed to heat sources.
Is Water an example of thermal conductor or insulator?
It is a conductor. While air has a thermal conductivity of 0.025 W/M-K, water has 0.6 W/M-K. Air, with this thermal conductivity, is considered one of the best isolators - practically, every isolation material (for construction purposes) is made up out of little cells full with air, so most of it's volume is actually air. Water is about 24 times more conductive. Which is still pretty bad compared to the thermal conductivity of aluminum, which is 237 W/M-K.
Is distilled water a good insulator?
Distilled water is not a good insulator as it still contains some ions that can conduct electricity. It has a low conductivity compared to tap water but is not a perfect insulator.
Is rust an insulator?
No, rust is not an insulator. Rust is a form of iron oxide that is a poor conductor of electricity, but it is not a true insulator. It can still conduct electricity to some extent due to the presence of iron in its composition.
What can't heat pass through?
Heat cannot pass through a vacuum because it requires a medium such as air or water to transfer thermal energy. Additionally, materials like insulators, such as wood, plastic, and rubber, are poor conductors of heat and can limit the transfer of thermal energy.
Is air a poor conductor of thermal energy?
Yes, air is a poor conductor of thermal energy. It is a good insulator because the molecules in air are far apart, making it difficult for heat to transfer through it. This is why air is often used as an insulating material in homes and buildings.
Why is it good to wrap an ice cream container full of ice cream with newspaper to stop it melting?
Still air is an excellent thermal insulator, and the layers of newspaper are poor conductors, thus the ice cream carton will keep about as cool as you can get without using extra refrigeration.
Is concrete an insulator or conductor?
Concrete is a poor conductor of electricity, so it can be considered an insulator. However, it may still allow some degree of electrical conduction due to impurities or moisture present in the material.
Would a toaster still be thermal energy if it was not pluged in?
no
