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Is a hairdryer convection or conduction?
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.
A clothes iron uses conduction.
a fridge is convection, because conduction is the movement of heat to another place. So a fridge is convection
Convection primarily. Historically, a heat source, whether in a fireplace or a furnace, heated the air in a home and set up convection currents because the warm air was more… buoyant. Modern homes use a "forced air" system to transfer heat which most people also consider convection. Heat transfer through conduction and radiative heating are sometimes important too. Obviously, the objects in a house acquire heat from the air and warm through conduction. Radiative heating is perhaps most obvious with a fireplace where radiative heating occurs in addition to convection. Heat loss from the home has both conduction and convection processes at work. The reason one puts insulation in a wall or ceiling is to reduce convection.
A fire is radiation.
they are two modes of heat transfer and both mean heat transfer involving materials
radiation is heat transfer through light (both visible and not). with a nuclear bomb, surrounding distant flammeables combust because of irradiated infrared energy. conduction… 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).
Conduction is heat transferred by two things touching Convection is transferred by air or other liquid (water?) So heat from an Iron used to make clothes flat is conduction.
Because, basically, there are no molecules in a vacum that can heat up and carry the heat around.
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.
They all involve the transfer of energy from one place to another.
Lack of a flow medium will inhibit conduction and convection.
Wind is Convection because wind travels by air in a circular motion.
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.