Relier Pairs ScienceVersion en ligne What do you know about energy? par Christina Spalding 1 Law of conservation of energy 2 Physical law 3 Energy 4 Kinetic energy 5 Mechanics 6 First law of thermodynamics 7 Law of conservation of mass 8 Mechanical energy 9 Potential energy Study of motion. Energy that is being used. The ability to perform work. Laws put in place by God to govern how things work in the universe. Energy of motion. Energy cannot be created or destroyed it can only change forms. Matter cannot be created or destroyed it can only change forms. Energy that is being stored. In a closed system, energy can neither be created nor destroyed, only transformed or transferred.