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8th - Topic 4

Vocabulary

QuestionAnswer
The state in which one object's distance from another is changing. Motion
A place or object used for comparison to determine whether an object is in motion. Reference Point
A push or pull exerted on an object. Force
A unit of measurement that equals the force required to accelerate 1 kilogram of mass at 1 meter per second. Newton
The force that two surfaces exert on each other when they rub against each other. Friction
The overall force on an object when all the individual force acting on it are added together. Net Force
The attractive force between objects; the force that move objects downhill. Gravity
The distance an object travels per unit of time. Speed
The steepness of a graph line; the ratio of the vertical change (the rise) to the horizontal change (the run). Slope
Speed in a given direction. Velocity
The rate at which velocity changes. Acceleration
Something in the middle or normal. Average
A letter or symbol that represents a number that can change. Variable
The tendency of an object to resist a change in motion. Inertia
Extracted from, drawn out of, or obtained from a source. Derived
A measurement of the force of gravity acting on an object. Weight
To connect something to something else in one's mind. Associate
 



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