Fluid
| Continuum mechanics |
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Afluidis a substance that can move easily and change shape such aswater(liquids), or air (gases), orplasmas.They can 'flow'- flow and fluids both come from the same English word roots (Latin:fluere"to flow" ) and are pronounced similarly. The physics of fluids is calledfluid mechanics.
Fluids usually take on the shape of their containers, in contrast tosolidswhich maintain their own shape.
Some things are not exactly fluid and not exactly solid, such asSilly Putty.Powdersare made up of small solids that appear to flow but don't actually.
Most fluids have afreezing point.At this temperature it becomes solid.
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