click below
click below
Normal Size Small Size show me how
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 |