Mix and Flow Chapter 3 Flashcards
What is viscosity? why is it an important propterty?
How quickly fluids flow is a proptery called viscosity. Fluids with high viscosity do not flow as easilty as fluids with low viscosity
What are fluids?
anything that doesnt have a fixed shape
Use the particle model of matter to describe why warm chocolate flows slower than hit chocolate
The particle model of matter can help you understand why the change in viscosity happens. When energy or heat is added to a liquid the particle slide and roll more quickly and the fluid flows more quickly. As a fluid flows more readily it’s viscosity decreases The reverse is also true as a temperature of the liquid drops the park will slow down. The result is that the viscosity increases and the fluid flows more slowly
How does temperature affect the viscosity of a fluid?
As the temperature of the liquid increases its viscosity decreases. The opposite is also true. As the temperature of a liquid decreases its viscosity increases.
What does density measure?
Density measures the amount of matter in a given volume
How do you find the density of an object?
D= m over v or D=M/V
How does particle model of matter help you explain why Coldwater is denser than hot water?
As particles become more active they move away from each other the space between them increases. This causes the volume to increase, but the number of particles stays the same. With the same number of particles in the larger volume the density decreases
Why does a liquid compress much less than the gas does?
There is much more space between particles in gas then between those in a liquid so there more easily compressible
Describe pascals law and give one example of its application
P= f/a F= newten A-= m2
Pascals law States that an enclosed fluid transmits pressure equally in all directions.
Hydraulic systems
A full water bottle has a hole at the top and another hole near the bottom how will the juices flow out of the two holes? Why is there different?
The Weight of the water in the upper part of the container pressed down on the water in the lower part of the container. The more water above a whole the greater the pressure and the farther water will flow out of the container. The greater the death of the water the greater pressure at that point
How does a car lift work? What problems does a car lift sub?
I device uses to pistons of different sizes to create pressure and to lift the car. A piston is a disc that moves inside of a cylinder. The small piston is the input piston, which pushes down on the liquid to create pressure. This pressure is been transmitted through the liquid work pushes of the large Princeton which is the output piston.
High viscosity vs low viscosity
A. Fluid with a hight viscosity has a large amount of internal resistance or friction. And low is the opposite
What the ramp method?
The ramp method is a method for testing viscosity in a liquid. It involves porn a fluid down a ramp and timing how long it takes to get to the bottom. By porn the same amount of another fluid and time that you can compare the viscosity between the liquids
What is the units for mass and volume
The units for the density of liquids and gases are usually grams per millilitre or kilograms per liter. The units for the density of solids are usually grams per cubic centimetre
As the temperature of water rises the density….?
A substance has a greater density and it’s solid state then it liquid state and gas state. So the hotter the water the lower the density
