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Science Ch. 10 Vocab
The vocabulary words for chapter 10 in the Physical Science book.
| Term | Definition |
|---|---|
| force | a push or pull |
| newton | SI unit for magnitude, or strength, of a force |
| net force | combination of all forces acting on an object |
| unbalanced forces | causes the velocity of an object to change |
| balanced forces | equal forces acting on one object in opposite directions |
| friction | a force that two surfaces exert on each other when they rub against each other |
| static friction | the friction that acts on objects that are not moving |
| sliding friction | the friction that acts on objects when two solid surfaces slide over each other |
| rolling friction | when an object rolls across a surface |
| fluid friction | when a solid object moves through a fluid |
| gravity | a force that pulls objects toward each other |
| mass | the measure of the amount of matter in an object |
| weight | the gravitational force exerted on a person or object at the surface of the planet |
| free fall | when the only force acting on an object is gravity |
| air resistance | a type of fluid friction that acts on objects falling through air |
| projectile | an object that is thrown |
| compression | an elastic force that squeezes or pushes matter together |
| tension | an elastic force that stretches or pulls matter apart |
| inertia | the tendency of an object to resist a change in motion |
| momentum | a characteristic of a moving object that depends on both the mass and the velocity of the object |
| law of conservation of momentum | a scientific law that states in the absence of outside forces, the total momentum of objects that interact does not change |
| satellite | any object that orbits another object in space |
| centripetal force | any force that causes an object to move in a circular path |