Energy Transfer Flashcards
1
Q
What is an energy transfer
A
- When energy is passed from one object to another
- e.g. from person to ball
2
Q
What is an energy transformation
A
- When the type of energy has changed
- e.g. electrical to thermal
3
Q
What do some energy transfers do
A
- Production of heat energy
- e.g. conduction, convection, radiation
4
Q
Useful energy transfer
A
- when energy is converted from one form to another
5
Q
Non-useful energy transfer
A
- energy that is not transferred or transformed
6
Q
Transferred energy efficiency formula
A
Efficiency = useful energy output/useful energy input
