Year 11 Physics Flashcards on UNIT 1.2.3 - MAKING USE OF ENERGY, created by Mr S Lee on 23/05/2018.
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Created by Mr S Lee
about 6 years ago
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Copied by Mr S Lee
almost 6 years ago
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Heat energy always flows from a region of ________ temperature to a region of ________ temperature.
The _______________ the temperature difference then, the _______________ the rate at which heat energy will be transferred.
What is conduction?
What is convection?
What is thermal radiation?
What materials does
conduction take place in?
What materials does
convection take place in?
What materials does
radiation take place in?
What is an insulator?
The diagram shows heat energy being lost from a house.
Suggest 3 ways to reduce heat losses from a house.
Describe how double glazing helps reduce heat energy losses.
Calculate the payback time of cavity wall insulation that costs £1,050 to install and saves £350 per year on the energy bills for a house.
Describe how cavity wall insulation works.
Calculate the percentage energy loss through the walls of the house.
When a fluid is heated the h___ fluid travels upwards.
This is because the warm fluid is less dense than the c____ fluid.
As the warm fluid c_____, it becomes more d____ and falls again.
This cycle is called a c__________ current.
A warm or hot object ________ (gives off) infrared radiation as heat waves, which can be __________ (taken in) by another object, heating it up.
Thermal radiation is the only type of heat transfer that can travel through a ________ as it does not require ____________ to move, instead the heat energy is transferred by __________.
