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Chp 4 Vocab-PS

QuestionAnswer
a combination of two or more simple machines compound machine
measure of how much work put into a machine is changed into useful output by the machine efficiency
a device that makes doing work easier machine
the ratio of the output force to the input force mechanical advantage
the application of a force through a distance work
energy stored in chemical bonds chemical energy
the ability to cause change energy
energy stored by things that stretch or shrink elastic potential energy
energy stored by things that are above Earth gravitational potential energy
energy in the form of motion kinetic energy
energy stored in motionless object potential
anything around which you can imagine a boundary system
energy may change from one form to another, but the total amount of energy never changes law of conservation of energy
the total amount of potential and kinetic energy in a system mechanical energy
the rate at which energy is converted power
a combination of two or more simple machines compound machine
Created by: bhardy4