We do enjoy getting a bit messy in the big class. This week we explored non-Newtonian fluid.
By contributing to investigations into familiar changes in substances to produce other substances, I can describe how their characteristics have changed. SCN 2-15a
Non-Newtonian fluids Many people have heard of Sir Isaac Newton. He is famous for developing many scientific theories in mathematics and physics. Newton described how ‘normal’ liquids or fluids behave, and he observed that they have a constant viscosity (flow). This means that their flow behaviour or viscosity only changes with changes in temperature or pressure. For example, water freezes and turns into a solid at 0˚C and turns into a gas at 100˚C. Within this temperature range, water behaves like a ‘normal’ liquid with constant viscosity.
Typically, liquids take on the shape of the container they are poured into. We call these ‘normal liquids’ Newtonian fluids. But some fluids don’t follow this rule. We call these ‘strange liquids’ non-Newtonian fluids.
IT’S A BALL, IT’S A BALL, IT’S A BALL…….IT’S A LIQUID!!!!!
Previously we have looked at the states of water. I can apply my knowledge of how water changes state to help me understand the processes involved in the water cycle in nature over time. SCN 2-05a
Next we will explore:
- Substances that can be pure or mixtures; separation of mixtures
- Separating mixtures of substances; common everyday examples
- Conditions which affect how much a substance dissolves or the speed of dissolving
