dissipating energy Flashcards
(8 cards)
1
Q
what happens when an energy changed from one form to another?
A
some of the energy turns into a less useful form (typically thermal or sound)
2
Q
what is the useful energy from a pendulum?
A
GPE, kinetic
3
Q
what is the not useful energy from a pendulum?
A
thermal
4
Q
what is the useful energy from a bike chain?
A
chemical, kinetic
5
Q
what is the not useful energy from a bike chain?
A
thermal, sound
6
Q
how can you reduce unwanted energy loss from a machine with moving parts?
A
make sure all parts are moving smoothly; lubrication with grease or oil
7
Q
how can heat loss be reduced from a house?
A
wall insulation, loft insulation, double glazing
8
Q
what happens when the energy loss is reduced?
A
more efficient
