Conduction - the transfer of heat through electron and molecular collisions

Conductor - an object or material through which electric current can pass

Conservation of energy - the principle that energy cannot be destroyed or created but can only be changed from one form into another

Conservation of momentum - when the net force on a system is zero, the total momentum of the system is constant

Conservative forces - forces for which work done is independent of the path followed

Conserved - a quantity that stays the same before and after an interaction

Constructive interference - the superposition of two identical waves that arrive at a point in phase

Contact force - another name for a reaction force

Control rod - a rod that regulates the rate of energy release in a nuclear fission reactor by regulating the absorption of neutrons

Convection - the transfer of heat in fluids through differences in fluid density