Force - A push or a pull., Gravity - A force that pulls objects toward the Earth., Mass - How much matter an object has; more mass means stronger gravity., Balanced Forces - Two equal forces pushing in opposite directions that cause no movement., Unbalanced Forces - Two unequal forces pushing in opposite directions that cause movement., Motion - A change in an object’s position or speed., Position - Where an object is located., Friction - A force that resists motion between two surfaces sliding against each other., Simple Machine - A tool that reduces the amount of force needed to do work., Inclined Plane - A ramp that connects a lower level to a higher level., Wedge - A triangular-shaped object used to hold objects in place or cut them., Wheel and Axle - A wheel that rotates around a rod to help move objects., Lever - A stiff bar supported by a fulcrum that lifts or moves a load., Fulcrum - The point that a lever rests on and pivots around., Screw - An inclined plane wrapped around a rod, used to hold things together or lift objects., Pulley - A rope and wheel system used to lift, lower, or move a load.,

Force, Motion, & Simple Machine

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