Question

Which of the following is an example of the law of conservation of energy?

Electrical energy transforming into sound energy in a speaker
Running out of energy after exercising for a long time
Running out of gas in a car
Turning lights off when you aren’t using them

Answer 1

turning lights of when you aren't using them

Answer 2

Electrical energy transforming into sound energy in a speaker

Step-by-step explanation:

Energy is neither created or destroyed, it can only be transformed.

The other options make it sound like energy was destroyed, and that is not the case. Energy was simply transformed into something else.