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# Physics Review

TermDefinition
amplitude how much a wave is displaced from its rest position
electromagnetic a wave that does not require a medium
transverse a wave that displaces the medium across the wave’s direction
wavelength the distance from a point of the wave to the same point
period the amount of time for the wave to repeat one cycle
longitudinal a wave that displaces the medium in the direction of motion
frequency the number of times a wave repeats in one second
mechanical a wave that requires a medium in order to move
scalar a quantity that has size but not direction
potential energy energy that is waiting to be used
displacement how far away an object has moved
radiation heat that is transferred across a distance
vector a quantity that has size and direction
conduction heat that is transferred by direct contact
kinetic energy energy that is in use
convection heat that is transferred by moving air or water
inertia an object’s resistance to change
wave a repeating disturbance than transfers energy
gravity the attractive force between two objects
velocity the speed and direction of an object
force any push or pull
momentum how hard it is to stop a moving object
acceleration any change in velocity
speed the rate of an object’s change in position

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