Question

Which best describes the law of conservation of energy? (4 points)
Responses

Energy cannot be created or destroyed; it can only change form.
Energy cannot be created or destroyed; it can only change form.

Energy exists in these forms: mechanical, chemical, thermal, electromagnetic, and nuclear.
Energy exists in these forms: mechanical, chemical, thermal, electromagnetic, and nuclear.

Energy is always transferred from the system with the most energy to that with the least.
Energy is always transferred from the system with the most energy to that with the least.

Energy can be created and destroyed in science labs.

Answer 1

Energy cannot be created or destroyed; it can only change form.

Explanation: The law of conservation of energy states total energy in an isolated system stays constant — it can be converted between forms (mechanical, chemical, thermal, etc.) but not created or destroyed. The other choices are either just a list of forms, a statement about heat flow (not the conservation law), or false.