Edexcel GCSE Physics · 1PH0
Specification 14.18P · Paper 2
Revise: Volume and PressureA greater collision rate means that momentum is transferred to the walls more frequently, producing a greater average force and hence a greater pressure.
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GCSE Physics · key term
The number of collisions occurring in a given time.
Used by Edexcel and OCR
Specification 14.18P · Paper 2
Revise: Volume and PressureA greater collision rate means that momentum is transferred to the walls more frequently, producing a greater average force and hence a greater pressure.
Specification P1.3d · Paper 1 (Foundation), Paper 3 (Higher)
The number of particle impacts on a surface during a given time.
Build the causal chain explicitly: smaller volume → particles travel a shorter average distance between wall collisions → collision rate increases → force per unit area increases → pressure increases.
For an expansion, reverse every link in the explanation: longer average distance between wall collisions, lower collision rate and lower pressure.
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