0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What are the different types of heat transfer?
There are three types of heat transfer, namely conduction, convection and radiation. Heat is transferred until the reach a state of equilibrium. Conduction is basically the transfer of heat through a surface of contact, such as a fire to the base of a pot. We say that a material is a good or poor conductor of heat when heat travels quickly or slowly in that particular material. Good conductors of heat are metals whereas poor conductors of heat are rubber and Styrofoam. Conduction cannot occur in a vacuum. Convection is the transfer of heat through molecules. It can only occur in liquids and gases as there are relatively big spaces between the molecules. A convection current is where hot air rises and cold air sinks. Convection cannot occur in a vacuum. Radiation is the transfer of heat through a vacuum. Heat is transferred from the Sun to Earth through radiation.
Why is a rubber band an insulator?
The electron configuration of rubber (natural of artificial is such that there is a big gap between valance band and conduction band of electrons. Electrons has to make a transition from valence band to conduction band in order to conduct electricity.
Why rubber bands are affected by temperature?
the colder the rubber bands are the slower themolecules move and the more heated up they are the raster they move!!!!!!!!!!!!!!PS. i I'm a kid
What is a not affected by a magnet?
Plastic,rubber,wood,cement,clay...and many more
How is convection and conduction the same?
Both terms refer to the transfer of heat between bodies,1) convection is for liquids and gases. Hot air/water flows upwards, and cold air/water flows downwards. In the process of doing this, both can give off excess heat to colder bodies of air/water/other liquids or gases.2) conduction is only for solids. If you heat up soup, and left an iron ladle in the boiling soup, after a while, the ladle would be very hot as well, because the heat of the soup is conducted to the lower part of the ladle first, but then the heated part of the lower ladle conducts heat up into the handle of the ladle.Of course, no one would buy such a horrible kitchenware, and that's why the soup ladles you usually see are insulating metals like aluminum or has a rubber grip (very good insulator)
What are the different types of heat transfer?
There are three types of heat transfer, namely conduction, convection and radiation. Heat is transferred until the reach a state of equilibrium. Conduction is basically the transfer of heat through a surface of contact, such as a fire to the base of a pot. We say that a material is a good or poor conductor of heat when heat travels quickly or slowly in that particular material. Good conductors of heat are metals whereas poor conductors of heat are rubber and Styrofoam. Conduction cannot occur in a vacuum. Convection is the transfer of heat through molecules. It can only occur in liquids and gases as there are relatively big spaces between the molecules. A convection current is where hot air rises and cold air sinks. Convection cannot occur in a vacuum. Radiation is the transfer of heat through a vacuum. Heat is transferred from the Sun to Earth through radiation.
How does a vacuum flask keep its energy?
1. Silvered interior reflects any heat which may transfer though radiation 2. Moderately hard vacuum almost eliminates transfer by conduction (& convection though this would be modest anyway) 3. Vacuum bottle is only supported by a few small rubber pads - again limiting conduction 4. Cap designed with air gaps to reduce conduction: plastic/air/plastic/air/plastic 5. Most flasks have an outer of plastic which is a reasonable insulator against conduction heat loss. The vacuum itself is the most significant design point.
What makes rubber such a bad conductor for electricity?
'Cause the conduction band of rubber are far away from each other.
Is rubber affected by different temperature?
no
Why is rubber a good electrical insulator?
The electron configuration of rubber (natural of artificial is such that there is a big gap between valance band and conduction band of electrons. Electrons has to make a transition from valence band to conduction band in order to conduct electricity.
Why is a rubber band an insulator?
The electron configuration of rubber (natural of artificial is such that there is a big gap between valance band and conduction band of electrons. Electrons has to make a transition from valence band to conduction band in order to conduct electricity.
Is the rubber inside of a tennis ball affected by weather?
yes the weather effect the rubber inside
How do you defrost a chicken in a microwave convection?
Neither you leave it out in a semi cold enviorment. if you put it in the micro wave you chicken will turn to rubber. If you put it in the convection oven it will cook the outside and the inside will still be raw.
Why rubber bands are affected by temperature?
the colder the rubber bands are the slower themolecules move and the more heated up they are the raster they move!!!!!!!!!!!!!!PS. i I'm a kid
Why do chihuahuas hate microwaves?
Their natural instincts tell then to stay away from the radiation emitting food to rubber machine.
What is the heat transfer occur in a rubber slippers on a beach sand at noon?
Its predominant energy transfer which is prevented is: Conduction- prevented trough the slippers which are poor conductor
Difference between convection and conduction?
Convection is a natural process that occurs in nature all the time, and even in your kitchen. Take a pot of boiling water for example. the water closer to the flame becomes hotter than the water near the top of the pot. As we all know, warm things rise, and cold things fall. So the hot water replaces the cooler water at the top of the pat. Where does the cold water go? It is forced to the bottom of the pot, where it too is then heated up, and replaces the water at the top of the pot that by now has cooled of. In simpler terms, convection is the circulation of LIQUID (or GAS), driven by heat (or cold). Conduction would have to do with WHAT the pot is made of, and how quickly/easily heat is transfered through it. Most of the time, conduction travels through SOLIDS (and sometimes GASES, i believe). Take a light bulb and a batterie, for example. To create a circuit, you need energy to get from the batterie, to the lightbulb, and then back again. If you were to use wires made off rubber, the electricity would not transfer through the wiring. You would have to use a wire made of some sort of conductive material. Hope this helped a bit!
