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CH 6 Vocabulary - Energy

Terms in this set (25)

energy
the ability to do work
kinetic energy
the energy of motion
potential energy
stored energy
gravitational PE
potential energy related to an objects height
elastic PE
potential energy related to the stretching of an object
mechanical energy
energy associated with the motion or position of an object
nuclear energy
energy stored in the nucleus of an atom
thermal energy
heat energy due to the motion of the particles in n object
electrical energy
energy of electric charges
electromagnetic energy
energy of light and other forms of radiation, moves in waves
chemical energy
energy stored in chemical bonds
energy transformation
a change from one form of energy to another
law of conservation of energy
energy cannot be created or destroyed, but can change forms
work
force x distance
power
the rate at which work is done
newton
unit used to measure force and work
joule
SI unit of energy
watt
SI unit of power
horsepower
a unit of power = 745.6 W
simple machine
a simple device without moving parts that changes the magnitude or direction of a force
compound machine
consists of two or more simple machines operating together
input force
the force exerted on a machine
output force
the force exerted on an object by a machine
mechanical advantage
the ratio of the force produced by a machine to the force applied to it
efficiency
a measure of how much work or energy is conserved by using a simple machine
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