Ch. 1- Fluids
A substance that can flow or continually deforms under applied shear stress.
A Fluid
Measures the speed at which a fluid flows from one point to another...
Flow rate
Your weight is a measure of how strongly __________ pulls on you.
gravity
Pressure refers to the force you apply on a...
unit surface area
When fluids are under pressure in a closed system, their volume is...
decreased
__________ helps us understand what makes a substance a ‘’fluid.’’
The particle theory of matter
To find the flow rate of a fluid, you must divide...
your volume by the time it took to empty (whatever it is you're emptying)
Measure of how much space an object takes is called...
Volume
Fluids, like water and air, tend to flow from one place into another when you...
apply pressure to them
The volume of gasses decreases significantly when they are...
under pressure
Laminar flow has...
little resistance.
_________ flows much slower than low viscous fluids.
Highly viscous fluids
The amount of mass per unit of volume (m3 , cm3, etc.) is called...
Density
Liquids are much harder to compress than gasses because...
their molecules are close to one another
The volume of liquids decreases minimally when they are...
under pressure
Turbulent flow has...
a lot of resistance.
The force of attraction between particles of a substance...
Cohesion
Measure of the amount of matter in an object or substance is called...
Mass
To calculate the pressure force, we must take the force (in newtons) applied by the object and...
divide it by the area on which it is placed (kitchen table)
As temperature increases, the particles of a substance...
move faster and further apart
Bonus:
Tell me something you learned in this unit. Anything!
Varies
When the surface of a liquid is strong...
Surface tension
The Archimedes Principle states that...
a floating object will displace a quantity of fluid equal in weight to the object itself.
Pneumatic is the study of...
pressure in gasses
As temperature decreases, the particles...
get cold and slow their moving