6.1 Energy transfers and systems Flashcards
1
Q
What is a closed energy system?
A
A system where the net change in energy is zero
2
Q
What is an energy transfer diagram called?
A
A Sankey diagram
3
Q
How do you calculate energy efficiency in words?
A
Efficiency of transfer is the proportion of total energy supplied that ends up in useful energy stores
4
Q
What does GPE stand for?
A
Gravitational potential energy
5
Q
In an electric toothbrush, what does electrical energy become?
A
- Kinetic energy
- Sound
- Thermal energy
6
Q
A
