NREMT Paramedic Exam 2025 – 400 Free Practice Questions to Pass the Exam

The principle described by the Conservation of Energy Law states that energy cannot be created or destroyed; it can only be transformed from one form to another. This means that while energy can change forms—such as from kinetic energy to potential energy, or from chemical energy to thermal energy—the total amount of energy in a closed system remains constant over time. For example, when fuel burns in a car engine, the chemical energy stored in the fuel is converted into mechanical energy, allowing the vehicle to move, but no energy is lost or gained in the process; it merely changes from one form to another.

This understanding is crucial for various fields, including physics, engineering, and even biology, as it helps explain how systems interact and how energy flows through them. The other options presented either misunderstand the nature of energy or misrepresent its characteristics, making the second answer the most accurate reflection of the Conservation of Energy Law.