8) Conduction
There are three main ways that heat is transferred.
1) Conduction
2) Convection
3) Radiation
Read about the methods of heat transfer on the website GCSE Bitesize. If further information is required, you can watch the video on clickview.
1) Learning about Heat Conduction - write up a summary of these notes
Now that you have been introduced to the three different ways that heat is transferred, we are going to look closely at each one - starting with CONDUCTION. The rule for conduction is given below:
Now that you have been introduced to the three different ways that heat is transferred, we are going to look closely at each one - starting with CONDUCTION. The rule for conduction is given below:
Heat always moves from HOTTER objects to COLDER ones - never the other way around.
Some substances conduct heat very well. This means that heat is moved quickly away from the heat source. Good conductors of heat are METALS and WATER. Also SOLIDS are better conductors of heat than LIQUIDS which are better conductors than GASES.
Examples:
1) Saucepan Handles must be made of rubber and not metal otherwise your hand will be burnt as metal are good conductors of heat.
2) Jump into a pool of water the same temperature as the air, you will get a chill as heat passes from you to the water. This is because water is a better conductor of heat than air.
3) Walking on a tiled floor makes your feet feel colder than when walking on carpet even though both are roughly the same temperature as the room. Tiles are better conductors of heat than carpet so heat moves away from your feet.
1) Saucepan Handles must be made of rubber and not metal otherwise your hand will be burnt as metal are good conductors of heat.
2) Jump into a pool of water the same temperature as the air, you will get a chill as heat passes from you to the water. This is because water is a better conductor of heat than air.
3) Walking on a tiled floor makes your feet feel colder than when walking on carpet even though both are roughly the same temperature as the room. Tiles are better conductors of heat than carpet so heat moves away from your feet.
Question: Why are gases poor conductors of heat?
2) Demonstration by Mrs Pizzimenti
4) Analysing Experimental Data Sheet
NB: Please put the match on the y-axis and time on the x-axis ALSO make sure that the graph is done using a ruler and different coloured pencils and is at least 1/2 an A4 page in size |
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