Fluid
Definition 1 of 6
Pro Tip 1/2
Physical States
Fluids can refer to liquids or gases, both of which flow and take the shape of their container. The physicist explained how fluids like water and air behave under different pressures.
Pro Tip 2/2
Freely Moving
The key characteristic of fluids is their ability to flow freely, as opposed to solids. Children love playing with fluids, watching them spread and mix.