Science (Energy 2) Flashcards
1
Q
what is the law of conservation of energy?
A
energy cannot be created or destroyed, only transferred
2
Q
what is efficiency
A
the percentage of energy which is useful for the desired application
3
Q
what is the definition of sustainable
A
living in a way that conserves resources for future generations
4
Q
what is the definition of work
A
the amount of energy transferred to an object by external force over a distance
5
Q
what does wasted mean
A
when energy is transferred as a less useful energy store
6
Q
what does renewable mean
A
these are not used up or can be reproduced in a short time frame
7
Q
conductor
A
a substance which allows heat/energy to be transferred through it
8
Q
work dissipation
A
when energy is transferred to the surroundings in the form of heat/sound
