# Heat and Temperature

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Y8 topic revision

Created Dec 6, 2006
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 Side A Side B 1 What is heat? Heat is a form of energy.Input of heat to a system usually results in an increase of... 2 What is temperature? Temperature is a measure of how hot or cold things are.It is an indication of how great... 3 What unit is heat measured in? It is a form of energy so it is measured in joules (J). 4 What is temperature measured in? It is most commonly measured in degrees Celsius. The Celsius and kelvin scales of... 5 What temperature does pure ice melt at? Pure ice melts at 0oC or 273K 6 What temperature does pure water boil at? Pure water boils at 100oC or 373K 7 How can you measure the heat put into (or taken out of) a system? It can be measured with a joule-meter or a combination of instruments, the readings of which... 8 How do you measure the temperature of a substance? It is measured with a thermometer. 9 What is a thermometer? An instrument that measures temperature>There are many different kinds of thermometer,... 10 Which way does heat flow? Heat always flows from hot areas to cold areas - never say heat always rises!! 11 What affects how fast heat flows between two objects? The bigger the difference in temperature between the hot and cold object the faster the heat... 12 How does temperature differ in a conductor and insulator? The temperature of an object made of a good conductor of heat tends to be the same throughout... 13 What is a heat insulator? A material that does not allow heat energy to travel easily through it. 14 What is a heat conductor? A material that allows heat energy to flow easily through itself. 15 How does the colour and texture of an object affect how easily it gains or loses heat energy? Heat radiation is absorbed/emitted readily by dark, dull, rough surfaces and less easily by... 16 What are the three methods by which heat travels? There are three methods of heat transfer: conduction, convection and radiation