## Theory

### Fluid -

Any substance that takes the shape of its container. A fluid can be poured. Both gases and liquids are fluids.

### Three States of Matter -

Solid, Liquid and Gas.

### The Differences in the Number of Molecules for each state of Matter-

Usually the students were sitting in a group on the floor. We told them that they represented the molecule distribution of a liquid in the area bounded by them. We told them to visulaize only Tony and I in the room. We then represented the molecule distribution of a gas. Lastly we asked the students to sit as close together as possible. At that point they represented a solid's molecules distribution

### Density -

Density = (mass / volume)

### Viscosity -

The resistance of a fluid to flow. For a particular liquid, the greater the viscosity, the greater the density.

### Laminar Flow -

Flow of a fluid where the Reynold's number is low. (ie/ the smooth straight line of smoke initially rising from a lit cigarette.)

### Turbulent Flow -

Flow of a fluid where the Reynold's number is high. (ie/ the wild and crazy smoke rising from a lit cigarette usually 5 cm from the end of the cigarette.)

### Examples of Non-Newtonain Fluids -

Cornstarch and water, Ketchup and Blood just to name a few.