P1.3.4 - Liquid Pressure

Question 1

What is liquid pressure?

Answer 1

Liquid molecules are very close with together and collide with each other, the container and anything in them.
This exerts a liquid pressure.

Question 2

What direction does liquid pressure act in?

Answer 2

Liquid pressure acts in all directions

Question 3

How do you show that liquid pressure increases as you go deeper?

Answer 3

By making holes in a water bottle

Less pressure at the top so water does not travel as far horizontally as at the bottom

Question 4

Why does liquid pressure increase as you go deeper?

Answer 4

The molecules in any layer of a liquid are being compressed by the molecules above them, making the pressure higher

Question 5

What happens to pressure in liquids with different densities?

Answer 5

More dense liquid will have more pressure at a certain depth as there is a greater weight of liquid pushing down

Question 6

What is the equation for liquid pressure?

Answer 6

Pressure (Pa) =

Height Of X Density X Gravitational Field
Column Of Strength (N/kg)
(M) Liquid
(kg/m^3)

Question 7

How do you work out the total pressure?

Answer 7

Liquid pressure + Atmospheric Pressure