Across
- 1. A state of flow where layers of fluid move together in parallel with little or no mixing between layers.
- 4. The maximum stress a material can withstand without fracturing.
- 7. When a material can return to its original shape, after an applied stress,without a permanent change to its shape.
- 8. The ratio of stress to strain of an object. It is a measure of how stiff a material is.
- 9. The force felt against the weight of an object when fully or partially submerged in a fluid.It is equal to the weight of the fluid displaced by the object.
- 11. The point on a force-extension graph at which a material begins to rapidly extend without any additional stress.
- 12. Mass per unit volume, with units kgm -3.
- 13. The magnitude of the force of viscosity acting on a spherical body as it movesthrough a fluid is proportional to its radius, its velocity and the fluid’s viscosity.
- 15. A material that fractures without plastic deformation first.
- 16. The point at which the stress on an object is so great that Hooke’s law no longer applies to an object.
Down
- 2. When a body is fully or partially submerged in a fluid, it experiences an upthrust equal to the weight of the fluid it has displaced.
- 3. The extension of an object divided by its original length.
- 5. The extension of an object is directly proportional to the force being applied to the object.
- 6. The internal resistance of an object against a force that acts to deform it. It is the force applied per unit cross-sectional area.
- 10. A quantity measuring the internal friction of a fluid, it acts to reduce the flow of a fluid.It is temperature dependent.
- 14. The maximum stress that can be applied to an object without plastic deformation.