Pressure (Edexcel GCSE Physics Combined Science): Flashcards

Force per unit area

$P = \frac{F}{A}$

Pascals (Pa)

$1 \text{ N/m}^2$

Their particles can move freely

Collisions between particles and surface

Decreases pressure

Exert more pressure

Increases particle speed, raising pressure

Lower (fewer air particles)

Increases with depth

$P = h \times \rho \times g$

$9.8 \text{ m/s}^2$

101.3 kPa

Pressure in liquid transmits force to lift heavy objects