forces and matter Flashcards
1
Q
for something to stretch, bend and compress what has to happen?
A
two forces need to be happening
2
Q
what is deformation and what are the two types of it?
A
changing the shape of something
- elastic deformation: something returns back to its original shape
- plastic deformation: doesn’t return to original shape
3
Q
what is hooke’s law?
A
the theory that the extension of a spring is directly proportional to the force applied
4
Q
what is atmospheric pressure?
A
the total weight of the air above a unit area
5
Q
what happens to atmospheric pressure when the height increases above the earths surface?
A
it decreases
6
Q
what is a fluid?
A
a liquid or a gas
7
Q
what is the pressure like in a fluid?
A
the denser the fluid, the greater the pressure
the deeper in the fluid, the greater pressure
