sp15 - fluid pressure

Question 1

what is a fluid

Answer 1

gases and liquids

Question 2

fluid pressure

Answer 2

pressure caused by the collisions of gas or liquid particles on a given surface

Question 3

what kind of force does fluid pressure exert?

Answer 3

fluid pressure always exerts a force at right angles (normal) to any surface in contact with the fluid

Question 4

what happens to the pressure as the area of the surface increases

Answer 4

as the area of this surface increases, the pressure exerted decreased

Question 5

what does the pressure exerted by a fluid depend on

Answer 5

the area the force is being exerted on, the properties of the fluid and the surrounding atmospheric pressure

Question 6

assuming their particles have the same mass, explain denser fluids in terms of particles

Answer 6

a denser fluid has more particles in a certain space than a less dense one, meaning more particles are able to collide so the pressure is higher at a given depth in the denser fluid

Question 7

what happens to the particles as the depth of fluid increases

Answer 7

as the depth of a fluid increases, the number of particles above that point increases