Fluid pressure

Question 1

What is pressure?

Answer 1

Pressure is the force per unit area.

Question 2

How do liquids create pressure ?

Answer 2

As a liquids particles with an object they create pressure. The pressure of a fluid means a force is any surface in contact with the liquid.

Question 3

How do you calculate the pressure at the surface of a fluid being used ?

Answer 3

Pressure in pascals ( Pa ) = Force normal to a surface ( N ) / Area of that surface ( m^2 )

P = F / A

Question 4

What does pressure in a liquid depend on ?

Answer 4

The depth and density

Question 5

What is density a measure of ?

Answer 5

The compactness of a substance. i.e. how close together the particles in a substance are.

Question 6

The more dense a liquid is, the mor
particles it has in a certain space . How does this affect the pressure ?

Answer 6

It means there is more particles that are able to
collide so the pressure is higher.

Question 7

As the depth of the liquid increases, the number of particles about the point increases. How does this affect pressure ?

Answer 7

The weight of these things articles adds to the pressure felt and that point, so the liquid pressure increases with depth.

Question 8

What equation do you use to calculate the pressure at a certain depth due to the column of a liquid ?

Answer 8

Pressure ( pa ) = height of the column of liquid ( the depth ) in m x density of the liquid ( kg/m^3 ) x gravitational field strength.

p = hpg

could write answer in standard form.