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SVU7
science vocab
| Question | Answer |
|---|---|
| acceleration | the change in an object's speed or direction over time |
| buoyancy | an object's ability to float |
| compound machine | a machine made of two or more simple machines |
| force | a push or pull |
| free fall | the hypothetical fall of a body such that the only force acting upon it is that of gravity |
| friction | surface resistance to relative motion, as of a body sliding or rolling |
| gravity | the force of attraction by which terrestrial bodies tend to fall toward the center of the earth |
| inclined plane | one of the simple machines, a plane surface inclined to a higher level |
| inertia | an object's tendency to resist a change in motion |
| lever | a rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third |
| lift | to move or bring (something) upward from the ground or other support to a higher position; hoist |
| magnetic force | a force produced by interacting magnetic poles |
| mass | the quantity of matter in an object |
| momentum | force or speed of movement; impetus, as of a physical object or course of events |
| motion | the action or process of moving or of changing place or position; movement |
| Newton's laws of motion | the rules and formulas for force, motion, acceleration, and mass |
| pressure | the exertion of force upon a surface by an object, fluid |
| pulley | a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force |
| screw | a simple machine that is an inclined plane wrapped around a cylinder to form a spiral |
| simple machine | a machine that changes the amount, distance, or direction of a force needed to do work |
| speed | rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity |
| wedge | a piece of hard material with two principal faces meeting in a sharply acute angle, for raising, holding, or splitting objects by applying a pounding or driving force, as from a hammer |
| weight | the force that gravitation exerts upon a body |
| wheel and axle | a simple machine consisting of two attached circular objects of different sizes that rotate together |
| work | a force applied to an object and the object moves as a result of the force |
Created by:
AHoldeman
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