P1.2 Flashcards
1
Q
Examples of energy in different forms?
A
Light, sound, kinetic (movement), nuclear, electrical, gravitational potential, elastic potential and chemical.
2
Q
Energy cannot be…?
A
Created or destroyed (conservational energy).
3
Q
Wasted energy?
A
Energy which is not usefully transferred.
4
Q
Useful energy?
A
Energy which is transferred to the place and form we want.
5
Q
Where do useful energy and wasted energy end up?
A
Being transferred to the surroundings, which become warmer.
6
Q
No machine can be more than?
A
100% efficient.
7
Q
Measures to make machines more efficient include reducing?
A
Friction, air resistance, electrical resistance and noise due to vibrations.
