Is a hairdryer convection or conduction?
Hair dryers use heating element and motor-driven fan to convert electric energy into convective heat.
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Conduction and convection are two of the methods of heat transfer. Conduction, also known as diffusion is the movement of heat between objects in physical contact with each o…ther. A soldering iron is a great example of transferring heat to the solder and the items being soldered by mutual physical contact. Convection is the transfer of heat via the movement of a fluid. When most fluids (liquids or gases) are heated their density decreases causing them to move relative to cooler, denser parts of the same body of fluid creating a convection current. All planetary winds are caused by convection as the Earth's rotation causes heating and expansion in some parts of the globe as the air cools in others. The other methods of heat transfer are: Radiation: a transfer of energy to or from an object via electromagnetic radiation. it's mostly what you can feel in the first the instant you turn on an electric heater, before it starts to heat the surrounding air. Advection: moving energy from one place to another by moving a hot object. For instance used for underground hog roasts etc. where rocks are heated in a fire above ground then buried with the item to be cooked.
Conduction is the movement of electricity and/or heat throughsomething. Convection is the transfer of heat through movement inan already heated gas or liquid.
Those are three methods to transfer heat.
they are two modes of heat transfer and both mean heat transfer involving materials
A fire is radiation.
They all involve the transfer of energy from one place to another.
the form of heat transfer in which the energy is transferred from one molecule to another is called conduction. the mode in which the molecules get transported during the heat… transfer process is called convention. heating up of sand is conduction and that of water is convention.
Because, basically, there are no molecules in a vacum that can heat up and carry the heat around.
Convection is the actual movement of the molecules from one object to another. Typically, we think of heat moving through air. Consider a toaster, also known as a convection o…ven...the air inside of the toaster is heated and the food inside the toaster is heated through convection. Conduction is the transfer of molecules directly from object to object. For example, think about if you touch a hot stove. Your hand on the hot stove will indeed burn you due to conduction of heat (do not however put your hand on a hot stove). Hope this helps!
energy will always be transferred
radiation is heat transfer through light (both visible and not). with a nuclear bomb, surrounding distant flammeables combust because of ir radiate d infrared energy. conducti…on is heat transfer through direct contact. a pot on the stove gets heated by the flame that touches it. convection is heat transfer through a medium (really really slow).
because, RADIATION occurs only in vaccum.. It does not require a medium to travel... where as conduction and convection require medium to travel. CONDUCTION: heat transfer bet…ween homogenous molecules(i.e.) flow of heat inside a body from one point to another. CONVECTION: heat transfer between two mediums(i.e) flow of heat from a metal to air surrounding the metal.
yes because it gives out hot hair?
No i do not
Convection, the transfer of heat in fluids (gases or liquids), ultimately relies on conduction (the transfer of heat energy through contact) between the molecules composing th…e fluid. Heat can only be exchanged through a fluid by individual molecules coming into contact and exchanging their heat energy or losing kinetic energy to form heat energy.