Loading…
Loading…
GCSE Physics · key term
A substance that can flow; liquids and gases are fluids.
Used by AQA, Edexcel and OCR
Specification 4.5.5.1.1 · Paper 2
A substance that can flow and may be either a liquid or a gas.
Revise: Pressure in a fluid 1A fluid is a substance that can flow. Both liquids and gases are fluids. When a fluid is in contact with a surface—such as the wall of a container or the face of a piston—it can exert a force on that surface.
Specification 15.8P, 15.9P, 15.12P, 15.15P · Paper 2
A substance that can flow, such as a liquid or a gas.
Revise: Pressure in a FluidA fluid is a substance that can flow, so both liquids and gases are fluids. Pressure describes how concentrated a force is over an area.
A substance that can flow and change shape to fit its container; liquids and gases are fluids.
Specification P2.3n · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Pressure in fluidsA fluid is a liquid or a gas. Water pushes against the sides of its container; air pushes against the inside of a balloon. These pushes are due to pressure.
Paper 1, Paper 2
A liquid or gas whose particles can move past one another.
Revise: Pressure in Fluids and Gas LawsA fluid is a liquid or a gas. Its moving particles collide with a surface in contact with it. Each collision changes a particle’s momentum and exerts a small force on the surface.
A liquid or gas that can flow.
In a diagram, draw each fluid-pressure force at 90° to the surface where it acts; do not draw it parallel to the surface.
State what is being kept the same: compare depth in the same fluid, or compare fluid density at the same depth.
Depth is measured vertically downwards from the fluid’s surface, not from the bottom of the container.
Create a free account to read GCSE Physics revision notes for your exam board and track your progress.