Heat transfer and efficiency Flashcards
1
Q
What is the energy transfer in a car?
A
Chemical energy from the fuel into useful kinetic energy, some wasted energy is given off ( heat and sound)
2
Q
How does a sankey diagram represent energy transfer?
A
The thicker the arrow, the greater amount of energy involved.
3
Q
What is a property of energy?
A
It cannot be created or destroyed.
4
Q
efficiency equation:
A
useful energy out / total energy in x100
5
Q
What does an electricity meters measure?
A
They measure the number of units of energy used in a home or a building.
