Density & Pressure

5.5 know and use the relationship between pressure, force and area:

pressure = force / area

p = F / A

5.6 understand how the pressure at a point in a gas or liquid at rest acts equally in all directions

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5.3 know and use the relationship between density, mass and volume:

density = mass / volume

ρ = m / V

5.4 practical: investigate density using direct measurements of mass and volume

5.7 know and use the relationship for pressure difference:

pressure difference = height × density × gravitational field strength

p = h × ρ × g