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Fluids
| Term | Definition |
|---|---|
| Fluid | materials that have no fixed shape and are free to flow |
| Flow rate | a measure of how quickly fluids move |
| Viscosity | a measure of how easily a fluid's particles are able to slide past one another |
| Cohesion | a measure of how strongly the particles of a fluid attract each other |
| Weight | the force of gravity acting on an object |
| Mass | the amount of matter that makes up an object or substance |
| Volume | the amount of space an object takes up |
| Density | a measure of mass per unit volume of a substance |
| Buoyancy | the upward supportive force on an object in a fluid |
| Compress | to pack closely together or squeeze |
| Pneumatic system | a system that uses gases under pressure |
| Hydraulic system | a system that uses liquids under pressure |