pressure
the amount of force exerted per unit area of a surface
pascal
the SI unit of pressure
fluid
any substance that can flow
barometer
an instrument used to measure atmospheric pressure
density
mass/volume
buoyant force
upward force exerted on an object immersed in a fluid
Archimedes' principle
the buoyant force on an object is equal to the weight of the fluid displaced by the object
Pascal's principle
pressure applied to a fluid is transmitted unchanged throughout the fluid
hydraulic system
a device that uses a pressurized fluid acting on pistons of different sizes to increase force
Bernoulli's principle
as the velocity of a fluid increases, the pressure exerted by the fluid decreases
lift
an upward force
Higher elevations have
less pressure
air pressure
the pressure exerted by Earth's atmosphere
flow of smoke up a chimney
Bernoulli's principle and hot air rises
water pressure increases as
depth increases
hydraulic systems can multiply
force
An object will float when weight and buoyant force are
equal
An object will sink if weight is __________ than buoyant force
greater
An object floats best when weight is _______ than buoyant force
less
Liquids and ____________ are fluids
gases
pressure
the amount of force exerted per unit area of a surface
pascal
the SI unit of pressure
fluid
any substance that can flow
barometer
an instrument used to measure atmospheric pressure
density
mass/volume
buoyant force
upward force exerted on an object immersed in a fluid
Archimedes' principle
the buoyant force on an object is equal to the weight of the fluid displaced by the object
Pascal's principle
pressure applied to a fluid is transmitted unchanged throughout the fluid
hydraulic system
a device that uses a pressurized fluid acting on pistons of different sizes to increase force
Bernoulli's principle
as the velocity of a fluid increases, the pressure exerted by the fluid decreases
lift
an upward force
Higher elevations have
less pressure
air pressure
the pressure exerted by Earth's atmosphere
flow of smoke up a chimney
Bernoulli's principle and hot air rises
water pressure increases as
depth increases
hydraulic systems can multiply
force
An object will float when weight and buoyant force are
equal
An object will sink if weight is __________ than buoyant force
greater
An object floats best when weight is _______ than buoyant force
less
Liquids and ____________ are fluids
gases