4.1
What is the SI unit of pressure?
Pascal
What law is it: P1*V1=P2*V2?
Boyle's Law
Why does a liquid move up a straw when drinking from the straw?
Air pressure in the straw is less than outside
What does an object appear to lose when immersed in water? (Archimedes)
Weight
What is the force on an object that is generated by relative motion between the object and a fluid and is perpendicular to the direction of fluid flow?
Lift
What state of matter is practically unaffected by attractive forces between molecules?
Gas
What is the force exerted per unit of area?
Pressure
What device has atmospheric pressure to measure altitude?
Altimeter
What principle states that the buoyant force on an object is exactly equal to the weight of the fluid displaced?
Archimedes principle
What is the phenomenon of a spinning cylinder or ball generating lift called?
Magnus Effect
What is the phenomenon in which liquids in a thin tube rise above or fall beneath their own levels?
Capillarity
What law is it: P1/T1 = P2/T2?
Amonton's Law
What device is used to measure atmospheric pressure?
Barometer
What technique uses buoyancy to determine the specific gravity of a solid object?
Hydrostatic Weighing
What is the angle of an airplane wing relative to the fluid flow called?
Angle of attack
What is the name of the curved surface that forms where a liquid touches the sides of a container?
Meniscus
What is the state of matter in which the molecules can move freely and conform to the shape of the container but remain attracted to each other?
Liquid State
What device uses an airtight metal box with thin, flexible walls to measure pressure?
Aneroid Barometer
What is the point at which the weight of a submarine is exactly equal to the weight of the water displaced called?
Neutral Buoyancy
What is the science of shaping objects to allow the smooth flow of fluids around them and reduce drag?
Streamlining
What are the 2 factors that affect gravitational pressure of a liquid?
Density and Depth
What law is it: P1/T1 = P2/T2?
Charles's Law
If the volume is constant and pressure of a gas decreases, what happens to the temperature?
It decreases
What is an upward force extended by a fluid on a solid object placed in the fluid?
Buoyancy
What is the fluid friction that tends to slow an object as it moves through a fluid?
Drag