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Heat energy-the transfer of thermal energy, particles move faster Solar energy-energy from the sun chemical energy-energy stored in particles of matter (batteries, sugar, food) electrical energy-energy flowing in an electric circuit generator-produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet, power plants solar cells-can be used to convert solar energy to electrical energy mechanical energy-energy due to the motion (kinetic) and position (potential) of an object potential energy-stored energy kinetic energy-energy an object has due to its motion transformations-can occur between the two types of mechanical energy, changing from one to the other rubber bands- when stretched they have potential energy, when let go, they have kinetic energy electric circuit-a loop in which electricity is able to flow wire-conductor of electricity battery-contains stored chemical energy light energy-electrical energy is changed to energy in a light bulb sound energy-electrical energy is changed into sound, like a radio or tv heat energy (transformation)-electrical energy is changed into a heat source, like an oven or toaster mechanical motion-electrical energy is changed into ______ by a fan or motor magnetism-the force of attraction or repulsion of magnetic materials magnetic field-a field that applies a force, a push or pull, without actually touching an object electric current-can form from a coil of wire spinning around a magnet or a magnet spinning around a coil of wire electromagnets-formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field water-can power turbines, wet wind-can power turbines, air steam-can power turbines, hot air simple motors-changes electrical energy to mechanical energy conduction-transfer of heat through touch convection-transfer of heat through air or liquid, rising and falling radiation-transfer of energy through space without particles of matter colliding or moving to transfer the energy work-means to apply a force to an object over a distance and the object moves in response to the force force-push or pull newtons-SI units that measure force spring scale-measures force lever-a rigid bar or board that is free to move around a fixed point called a fulcrum pulley-has a grooved wheel with a rope running along the groove effort force-the amount or direction of the force applied to the object inclined plane-a sloping surface, like a ramp, that reduces the amount of force required to lift an object fulcrum-a fixed point in which a lever can move freely tweezers-kind of lever, think unwanted hair scissors-kind of lever, think to cut wheelbarrow-mix of wheel and axle and a lever, think leaves fixed pulley-attached to a structure, can be found on the top of a flag pole and on window blinds moveable pulley-not attached to a structure, can be found on construction cranes, part of a block and tackle system wedges-inclined plane, like a knife-blade ramps-inclined plane, sloping surface screws-inclined plane wrapped around a post or cylinder wheel axle-door knobs, steering wheels, gears complex machine-consist of two or more simple machines compound machine-another name for complex machines bicycle-example of a complex machine, takes you places