Energy Transformations Flashcards
1
Q
Law of conservation?
A
Energy cannot be created or destroyed. It can only being changed in form.
2
Q
Striking a match?
A
Chemical + kinetic = sound + light + heat
3
Q
TV?
A
Electrical = light + heat + sound
4
Q
What energy input equal?
A
Output energy
5
Q
What is the output energy?
A
Useful energy + wasted energy
6
Q
Equation of input energy?
A
Input = output Input = useful + wasted
7
Q
Total energy input is 1230J. Useful energy is 545J. How much energy is wasted?
A
1230-545 = 685J (total minus useful = wasted)
8
Q
Car?
A
Chemical = sound + heat + kinetic + light
