Pressure
Heating a fluid causes its pressure to _______
What is increase
Fluid pressure is equal in ___________ ________
What is all directions
An example of fluids moving from areas of higher pressure to areas of lower pressure
What is: a straw, breathing / lungs vacuum cleaner, fan
When an object is less dense than fluid, the object will ______
What is float
The ability of a fluid to exert an upward force on an object placed in it
What is buoyancy
The formula for pressure is
What is force / area
If the weight of a submerged object is equal to the weight of the displaced fluid, the object will have _____________ buoyancy
What is negative buoyancy
The mass per unit volume of a substance
What is its density
What does displace mean?
What is to push to the sides?
Materials that can easily flow
What are fluids
SI unit for pressure
What is Pascal
A change in pressure at any given point in a fluid is transmitted equally and unchanged in all directions throughout the fluid
What is Pascal's Principle
Fluids include
What are liquid and gases
Pressure is exerted equally in all _________
What is directions
An instrument used to measure air pressure
What is a barometer
Water pressure ________ as depth increases
What is increases
A boat will sink if the weight of the water that it displaces is _______ than the weight of the boat itself.
What is less
As the speed of a fluid increases, the pressure within the fluid ________
What is decreases
The buoyant force on an object is equal to the weight of the fluid it displaced.
What is Archimedes' Principle
A force that particles of a fluid exert over a certain area due to their weight and motion
What is pressure
Air pressure increases as
What is altitude decreases
Why is salt water more dense than fresh water?
What is because salt adds to the density
When something is negatively buoyant, it will ______
What is sink
Because of gravity, fluid pressure increases with
What is depth
An upward force exerted by a fluid on a submerged object
What is a buoyant force