The Quest (11/19/15) Flashcards
Define pressure
A force exerted over a certain area
What is pressure measured in?
Pascals
How is force found?
pascals times area
What does Pa stand for?
Pascals
What does ATM stand for?
Atmosphere
What does Psi stand for?
Pounds per square inch
What does thin air mean?
Less dense
Where does thin air occur?
Higher Elevations
Describe Boyle’s law
Boyle said that with constant temperature, the volume of a gas is inversely proportional to its pressure
Describe Charles’ law
With constant pressure, temperature and volume are directly proportional
Describe Gay-Lussac’s law
Constant volume, pressure and temp of a gas are directly proportional
Give and example of each law
Boyle- bubble under water, the higher up, the less pressure. Less pressure allows for a bigger bubble
Charles- Hot air balloon, the hotter the fluid, the more volume
Gay-Lussac- Pressure cooker, higher the temperature the more pressure
Define fluid
any substance that has flow, typically gases or liquids that can be manipulated by pressure, forces, or barriers.
How do fluids travel?
areas of high pressure to areas of low pressure
How do curves affect the flow?
faster travel over curved surfaces
Describe fluid principles
fast fluid, low pressure Fast moving (high velocity) fluids create areas of low pressure
Give some examples of fluid principles
The Attack of The Shower Curtain, the strip of paper, ping pong ball and hair dryer
What is Pascal’s principle?
When pressure is exerted anywhere in a confined, incompressible fluid, that pressure is transmitted equally in all directions inside a system
What are some examples of Pascal’s principle?
Squeezing and bottle, Hydraulics (only for liquids), Squeezing toothpaste
What happens if a gas gets inside a hydraulic system?
The force will jot be exerted.
What is Archimedes principle?
The upward boyant force that is exerted on a body immersed in a fluid (fully or partially submerged) is equal to the weight of the fluids that the body displaces.
The weight of the fluid in the spillover bowl will be equal to the buoying force on the object in the larger spout cup.
What is bouyancy?
the tendency of an object to float
What is density?
mass of an object divided by its volume
