force - push or pull that causes an object to move, stop or change direction, magnetic force - force between two magnets that can push of pull, balanced forces - forces in state of equal and opposite forces that cancel each other out, motion - change in an object's position with respect to time and in comparison to other objects, gravity - invisible force that pulls things toward the center of earth, kinetic energy - energy that a moving body has because of its motion, potential energy - energy stored in an object that is NOT moving, inertia - tendency of an object to resist change in the direction or speed of its motion, acceleration - rate in change in velocity of an object, speeding up, mass - quantity of matter within a given object, weight - the force of gravity acting on an object, measured in Newtons, Newton's third law - for every action, there is an equal and opposite reaction, Net forces - the sum of all forces acting on an object, resulting in the total force that causes the object to accelerate, gravitational pull - a fundamental force of attraction that exists between any two objects with mass. This force pulls objects towards each other, with the strength of the force dependent on the masses of the objects and the distance between them, law of conservation of energy - energy can neither be created nor destroyed, but only transformed from one form to another, open circuit - a circuit where the path has been interrupted or "opened" at some point so that current will not flow, closed circuit - an electrical circuit where there is a continuous, uninterrupted path for electric current to flow, insulator - plastics, Styrofoam, paper, rubber, glass and dry air, conductor - a material that allows electric current to flow through it easily. Examples include metals like copper, aluminum, gold, and silver, as well as some non-metals like graphite, electrically charged - when it has an imbalance of positive and negative charges, typically due to having more or fewer electrons than protons, magnetic field - (sometimes called B-field) is a physical field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials, magnetic pole - a region where the external magnetic field is strongest, typically located at the ends of a magnet, magnetic domain - a microscopic region within a magnetic material where the atomic or molecular magnetic moments are aligned in the same direction,

7th physics

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