science quiz vocab Flashcards
1
Q
force
A
a push or a pull
2
Q
newton
A
the strength of a force is measured in the SI unit
(N) = newton
3
Q
net force
A
the combination of all forces on an object
4
Q
friction
A
the force that two surfaces exert on each other when they rub against each other
5
Q
sliding friction
A
occurs when two solid surfaces slide over each other
6
Q
static friction
A
acts between objects that aren’t moving
7
Q
fluid friction
A
occurs when a solid object moves through a fluid
8
Q
rolling friction
A
when an object rolls across a surface
9
Q
gravity
A
a force that pulls objects toward each other
10
Q
mass
A
a measure of the amount of matter in an object
11
Q
weight
A
a measure of the force of gravity on an object
