38548297
Description
Flashcards by Lavina Laza, updated more than 1 year ago
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Created by Lavina Laza
almost 3 years ago
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| Question | Answer |
| What is the only substance that Thermal energy can be applied to? | Solid |
| The _____ in the solid are given more ______ and their ________ increases. | atoms energy vibration |
| What happens to the increased vibrations? | They are spread through the material. |
| This increases the average _______ ______ in the material and so does the ___________. | Kinetic energy temperature |
| In general are metals good conductors of heat? | Yes |
| Why are metals good conductors of heat in general? | Because they contain electrons as well as molecules |
| When the metal is heated what do the free electrons do? | They vibrate rapidly. |
| They move from the ___ end of the rod towards the ____ end of the rod. | Hot Cool |
| When they bump into each other _____ and electrons , they pass on the ____ _________. | atoms free electrons |
| This means that the ____ is transfered more quickly with the ____ _________ than with just the slower moving _____. | heat free electrons atoms |
| ___ ________ solids such as plastic , _____ and ceramic are ____ conductors. They do not contain ____ _________ so heat is only conducted by the slower moving __________. | non metalic glass free electrons molecules |
| Liquids (like water) are also poor __________. Air a very ____ conductor. It is often called an __________. | conductors poor insulator |
| _______ ____ such as wool and wood are particularly good __________. This is because ___ __________ are trapped inside the material. | Natural fibre insulators air molecules |
| _____ _______ are made of non conducting fabric. ______ ______ take advantage of the ultimate insulator against conduction -a ______. | Oven gloves Vacuum flasks vacuum |
| Defenition of convection. |
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