Matching Pairs Work and EnergyOnline version vocabulary exercise for work and energy by Monica Watkins 1 Gravitational potential energy 2 Compound machine 3 Mechanical energy 4 Potential energy 5 Energy 6 Work 7 Kinetic energy 8 Simple machine 9 Mechanical advantage 10 Law of conservation of energy 11 Power 12 Efficiency force applied through a distance energy due to motion the sum of the kinetic energy and potential energy of the objects in a system is the ratio of output work to input work a combination of two or more simple machines a machine that does work with only one movement of the machine states that energy cannot be created or destroyed the ratio of the output force to input force the rate at which energy is converted energy that is stored due to the interactions between objects energy that is due to the gravitational forces between objects the ability to cause change