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Heat+Energy Transfer
conduction convection &radiation
| Question | Answer |
|---|---|
| When air is heated the particles move | further apart |
| State a material which lets heat pass through it easily | conductor |
| State a material which does not let heat pass through it easily | insulator |
| Explain conduction in terms of vibrating particles | conduction involves heat energy being passed on by the vibration of particles. When the particles get hot they start to vibrate more and bump into the particles next to them. |
| is air a good conductor of heat | no air is not a good conductor of heat because it's particles are too far apart and cannot pass on the vibration. |
| What are heat rays also known as | Infra-red rays |
| Heat transfer through gases and liquids | convection |
| Heat transfer in solids | conduction |
| What is a good conductor of heat | metal |
| what is a good insulator of heat | wood |
| Heat transfer through space | Radiation |
| what is temprature measured with | thermometer |
| the hotter a substance is | the greater heat energy it contains |
| which colour absorbs heat better | black |
| is cooper a better conductor than iron | yes it is a better conductor than iron |
| the movement of less dense warm fluid upwards which is then replaced by cooler, denser fluid from below | convection current |
| The ratio of the mass of an object to it's volume | density |
| the scientific name for a heat picture | Thermogram |
| a form of energy measured in joules | heat |
| Give examples of insulators in the home | pot handles, wooden spoon etc |
| Give examples of conductors in the home | pots and pans |
Created by:
Salma A
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