What is the affect of increasing temperature of a fluid?
Decreased (lower) Viscosity
100
What is the density formula?
Mass divided by volume
100
What is the buoyant force?
Moves upward and works against gravitational force.
100
What is compression?
A decrease in volume caused by a force.
100
In a hydraulic system, what are valves used for?
Control the flow of liquids in the right direction.
200
What is flow rate?
A measure of the speed at which a fluid flows from one point to another.
200
What is Density?
Describes how closely packed together the particles are in a substance.
200
What is buoyancy?
The tendency of an object in a fluid to rise or sink due to density diifferences with its surroundings.
200
What is pressure?
The amount of force applied to a given area.
200
Pascal’s law explains what?
That pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations (initial differences) remain the same.
300
What is viscosity?
The resistance of a fluid to flow.
300
What is a gas?
State of matter that has the least density.
300
What is sinking?
Density of object is greater than density of the fluid and the gravity force is greater than the buoyant force.
300
What is depth?
As the _________________ of a swimmer increases, so does its pressure.
300
What is altitude?
The higher the ____________ the less air pressure there is.
400
What is the effect of cooling a fluid?
Viscosity Increases (rises)
400
What is a solid?
State of matter that has the most density.
400
What is gravitational force?
Force working against the buoyancy force...gravity.
400
From what direction does a fluid flow to and from?
From an area of high pressure to low pressure.
400
When a force of 80 N is exerted on a surface area of 10 m2, what is the pressure?
The pressure is 8 Pa.
500
What are examples of substances that are useful because of their viscosity?
Ketchup and Maple Syrup
500
What is a liquid?
State of matter that has a greater density than a gas, but a smaller density than a solid.
500
What is the Plimsoll line?
Shows how heavily a ship can be safely loaded in different water conditions.
500
What is temperature?
An increase in _________________ by adding heat will result in higher pressure.