Energy efficiency + Keeping warm Flashcards
1
Q
Efficiency
A
How good a machine is at transferring energy into useful forms
2
Q
Formula to calculate efficiency
A
Useful energy transferred/total energy supplied
3
Q
Insulation
A
The process which slows down the rate at which energy is transferred out of a house by heating
4
Q
Conduction
A
Vibrations passed on between particles in a solid
5
Q
Example of a good and a bad thermal conductor
A
Good conductor: metal, bad conductor: wood
6
Q
Convection
A
Part of a fluid that is warmer than the rest that rises and sets up a convection current
7
Q
Radiation
A
The only way by which energy can be transferred through a vacuum
8
Q
Insulator
A
Anything that does not allow any sort of heat to pass through
9
Q
Conductor
A
Anything that allows the flow of heat in one or more directions
