attract - to pull toward, balanced - in a state in which equal and opposite forces cancel each other out, chemical energy - energy made by a change in a substance or a combination of substances, direction - the way or course toward which something moves or faces, distance - amount of space between things, electricity - energy created by moving charged particles, electromagnetism - the combined force of electricity and magnetism, energy - the power to do work, make a change, or move objects, energy transfer - the movement of energy from one object to another or the change of energy from one form to another, engine - a machine with moving parts that uses power to create motion, force - the strength or energy that moves an object, friction - a force that slows down moving things, generator - a machine that turns potential and kinetic energy into electricity, gravity - the force that pulls things toward the center of earth or any other object that has mass, heat energy - a form of energy that is transferred from an object with a higher temperature to an object with a lower temperature, inertia - the tendency of an object to resist change in the direction or speed of its motion, kinetic energy - the energy that a moving body has because of its motion, laws - a. statement about results that always occur under certain circumstances, light energy - a form of radiant energy that allows us to see, lines of force - invisible lines of magnetic force that flows through and around a magnet, magnetic field - an area around a magnet or a moving electrical charge within which a magnetic force acts, magnetism - a force that pushes and pulls certain metals, mass - the amount of matter measured on earth by its weight, momentum - the strength or force that keeps something moving, motion - the act of going from one place to another, potential energy - the energy a body has because of its position, electrical charge, or structure, reaction - an equal opposite response to a force being applied, repel - to force or push away, rest - a pause during which to force is moving an object,

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