p24 - Heat and Temperature Heat The temperature of an...

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Heat and Temperature Heat and Temperature The temperature of an object tells us how HOT it is Measured in degrees Celsius - °C It is NOT the same as heat energy although the two quantities are related. e.g. a beaker of water at 60 °C is hotter than a bath of water at 40 °C BUT the bath contains more joules of heat energy
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Heating and Cooling Heating and Cooling If an object has become hotter , it means that it has gained heat energy. If an object cools down , it means it has lost energy
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Heating and Cooling cont… Heating and Cooling cont… Heat energy always moves from: HOT object COOLER object e.g.Cup of water at 20 °C in a room at 30°C - gains heat energy and heats up – its temperature rises Cup of water at 20 °C in a room at 10°C loses heat energy and cools down – its temperature will fall.
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HEAT ENERGY HEAT ENERGY Energy transfer Conduction Convection Radiation
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Conduction Heat is transferred through a material by being passed from one particle to the next Particles at the warm end move faster and this then causes the next particles to move faster and so on. In this way heat in an object travels from:
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This note was uploaded on 02/12/2011 for the course PHY 2004 taught by Professor Staff during the Spring '08 term at University of Florida.

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p24 - Heat and Temperature Heat The temperature of an...

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