True or False
Matter is anything that has mass and takes up space.
TRUE
The _______________ of a fluid is a measure of its resistance to flow at a given rate.
Viscosity
Compressed air or gas under pressure
Pneumatic
Formula for Density
Density = Mass/Volume
If the buoyant force of an object is at least equal to the force of gravity pulling the object to the ground, the object will ...
Float
There are only three states of matter: solid, liquid, and gas.
FALSE
The fourth state is PLASMA
__________ is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.
Buoyancy
Liquid under pressure in a confined space
Hydraulic
Formula for Mass
Mass = Density x Volume
The movement of liquids and gases is referred to as ...
FLOW
A gas is a fluid because it flows.
TRUE
_______________ is the substance's mass per unit of volume.
Friction, Cohesion, Adhesion, and Temperature are factors that affect ______________.
Viscosity
Formula for pressure
Pressure = Force/Area
Name and describe the two types of flow ...
BONUS: Give an example for each (200 points)
Laminar flow travels smoothly and in regular paths
e.g. hose at a normal flow
Turbulent flow is more irregular and chaotic
e.g. hose turned up high
A fluid is a material with a fixed shape and able to flow freely.
FALSE
Fluid flows freely BUT it does NOT have a fixed shape.
________________ is a measure of the change in volume resulting from the external pressure applied to the surface of an object.
Compressibility
If pressure is exerted on a fluid, it will be evenly distributed throughout the fluid.
Pascal's law
A piece of aluminum has a volume of 20cm3 and has a mass of 45g. The density is...
density = mass/volume
45g/20cm3
2.25 grams per cm3
What is adhesion? Provide an example
Adhesion is the attraction between two different types of particles.
For example, glue
Gases can be compressed much more easily than a liquid or solid.
BONUS: What is a system containing air or gas under pressure called?
250 points
TRUE
A pneumatic system contains air or gas under pressure.
____________ is a reference mark located on a ship's hull that indicates the maximum depth to which the vessel may be safely immersed when loaded with cargo.
Plimsoll line
_____________ states that a floating object will displace a quantity of fluid equal in weight to the object itself.
Archimedes Principle
A force of 1190N is being applied to a surface area of 10 m3
Pressure = Force / Area
= 1190/10m3
= 119 m3
What is cohesion and give an example
Cohesion is when particles of the same substance stick together
E.g. a group of friends sticking together outside during recess