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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.
When you turn on the heat in the car heat is being transferred by what?
I would say it is traveling by your cars air conditioner pump/fan with the air running across your heater core but since that's mechanics I'll tell you the physics answer too... Convection. Heat traveling through the air (or a liquid) to transfer to another (solid) material is called heating through convection. ;)
Transfer of thermal energy from one piece of matter to another?
I'm not sure I understand your question, but hopefully this answers it... There are 3 types of heat transfer. Conduction, convection, and radiation. Conduction is the transfer of heat between objects that are in contact. In other words, the molecules from a hot object bounce into the molecules of another object and transfer their kinetic energy. Convection is the transfer of heat in which particles of matter transfer heat to another location. For instance, say you are boiling water. High energy molecules in the water carry their energy to the air molecules jsut above the water's surface. When this heat is transferred the water molecule will then sink to the bottom of the pot generating what we would call a convection current. And lastly radiation...Radiation is transfer of heat that does not require a medium (matter) to travel. This heat is transferred in the form of electromagnetic radiation (basically light of different frequencies). The sun does this everyday. It delivers a solar wind to planet Earth, keeping us warm! :D
Is a hair dryer a form of convection?
You're thinking about it all wrong. You're right in thinking convection is a method of heat transference, but it has to do with the fact that warm air rises and cool air sinks which produces winds. I can't say I've actually studied a hair dryer before but if I had to guess I'd say that the electricity moves through strategically placed transistors that produces heat while a fan placed behind them blows air over them which in turn becomes hot as it exits the nozzle. Maybe you're thinking of conduction, in which case you would be correct if I understand your wording.
Does heat describe how hot or cold something is?
The term heat can refer to something being hot or cold. If an object is hot, you could say that it has a lot of heat, and if it is cold, you could say that it has very little heat. However it should be noted that heat and temperature are not quite the same thing. A bathful of lukewarm water contains far more heat, or thermal energy, than a lit candle. Though the candle has a higher temperature.
How do you say very useful in spanish?
muy util
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.
Would wood be useful in conducting heat?
Wood "holds" heat and releases it when it is burned. The remaining ash then "holds" no heat. They are speaking is heat value here. Wood in and of itself does not "retain" heat. Not very well unless it is painted or varnished because wood sn porous and heat can escape through the 'pores'.
Is it true that convection is the flow of heat energy by direct contact?
Convection needs a fluid. More specifically, convection is the motion of a fluid that is caused by the effects of non-uniform density. In all real examples of convection, the non-uniform density is caused by non-uniform temperature. If you accept the relationship between temperature and density as a given physical law, then you do not need to talk about molecules in order to explain convection; but if you want also to explain why the density changes with temperature, then you probably will need to talk about the molecular nature of the fluid.
When you turn on the heat in the car heat is being transferred by what?
I would say it is traveling by your cars air conditioner pump/fan with the air running across your heater core but since that's mechanics I'll tell you the physics answer too... Convection. Heat traveling through the air (or a liquid) to transfer to another (solid) material is called heating through convection. ;)
To say that a thing is worth its weight in gold is to say that it is .?
Very useful. Rarely it may mean valuable.
To say that a thing is worth it's weight in gold is to say that it is?
Very useful. Rarely it may mean valuable.
Which are the more rapidly heat transfer between solid and solid or gas and gas?
I WOULD SAY IT DEPENDS ON THE MASS OF EACH. If equal mass of all then it would be the gas to gas due to convection as the major transfer of heat.
What is happening when heat is transferred through convection?
energy is transferred through moving currents of warmer air or liquid
How do you say. Father in Greek?
πατέρας If you have any other questions such as these use http://translate.Google.com It is a very useful tool.
How heat transfered by convection?
Convection is the process by which heat is transferred by a "fluid" (which, in this case, can actually mean a liquid or a moving gas - both are considered "fluids"). Heat is always transferred from an area of high heat to an area of low heat, regardless of the method. When your hand touches a hot stove, heat moves from the stove to your hand to try to "even out" the amount of heat between the two objects. In convection, heat is first transferred from an area of high heat to the fluid, then from the fluid to an area of (relatively) lower heat. Imagine you're sitting downwind of a bonfire. The wood has lots of heat - some of it is transferred to the air. The air is pushed toward you by wind, and when the air hits your skin, there is another heat transfer because your skin has less heat than the air. The net result is a transfer of heat from the wood to your skin, and we say this is by convection. Another example might be the way everything in a small kitchen gets warm in a hurry when things are baking in a hot oven. Some radiation occurs, but lots of air picks up heat from the stove, and then rises to be displaced by cooler air. The hot air heats things in the upper regions of the kitchen, and then cools and sinks. It then may return to the stove to pick up more heat as hot air there continues to circulate upward. Convection currents in air transfer heat.
How do you say But it have been very useful for me in French?
Mais ça a été très utile pour moi
