The universe’s total amount of energy does not ever change, but the amount of this energy that is available to do work varies tremendously. What statement best explains the changes in available energy?(1 point)

Responses

The only way to create energy is through nuclear reactions.
The only way to create energy is through nuclear reactions.

Energy transfer always occurs through heat.
Energy transfer always occurs through heat.

100% of energy is always converted with perfect efficiency.
100% of energy is always converted with perfect efficiency.

Energy constantly changes from one form to another.

1 answer

The best statement that explains the changes in available energy is:

Energy constantly changes from one form to another.

This reflects the principle that while the total energy in the universe remains constant, its forms and the availability of that energy for doing work can change, often resulting in some energy becoming less usable (for example, as heat).