Balanced force - Equal forces, no motion change, Contact force - Force through physical touch, Friction - Resists motion, Force - Push or pull, Applied force - Force by an object or person, Gravity - Attracts objects towards each other, Interaction - 2 objects having action between objects, Motion - Change in position, Reference point - A place to compare if something is in motion or not, Unbalanced force - Not equal forces, motion is happening, Acceleration - how quickly an object's velocity changes, Speed - How fast an object moves; the distance traveled in a certain amount of time., Direction - The line or path along which something moves (north, south, left, right, etc.)., Kinetic Energy - Energy an object has because it is moving., Potential Energy - Stored energy an object has because of its position or condition (like a stretched rubber band or a ball at the top of a hill)., Conservation of Energy - The principle that energy cannot be created or destroyed, only changed from one form to another., Hypothesis - A testable prediction or educated guess about what will happen in an investigation. Often written as “If…, then…”, Variable - Anything that can change in an experiment., Independent variable (Manipulated variable) - The one thing that is changed on purpose in an experiment to test its effect., Dependent variable (Responding variable) - The factor that is measured or observed in response to the independent variable., Constant (Controlled variable) - Things that stay the same during the experiment to make it fair., Quanitative - Measurements or amounts that use numbers (mass, length, time, temperature)., Qualitative - Descriptions based on qualities or observations using the five senses (color, smell, texture).,

Force and Motion

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