Physical Science - Chapter 16

# Fluids

# 16A Properties of Fluids

Fluids and Pressure

Fluid: any substance that can flow

Pressure: a measurement of the amount of force acting upon a unit area

Pascal: the derived SI unit of pressure

Pascal’s Principle: the principle that states that pressure applied to a fluid is transmitted throughout the fluid

Buoyancy: the tendency of an object to float when immersed in a fluid

Buoyant Force

Buoyant Force: the upward force caused by the displacement of a fluid

Archimedes’s Principle: the principle that states that an immersed object displaces an amount of fluid equal to its volume and that the weight of the displaced fluid is equal to the buoyant force acting on the object

Neutral Buoyancy: the condition when an object submerged in a fluid neither ascends nor descends because its density is equal to that of the fluid

Viscosity: a measure of a fluid’s resistance to flowing

# 16B Gas Laws

Boyle’s Law: a gas law that the pressure and volume of a sample of gas at a constant temperature are inversely proportional

Pressure and Volume

Collisions

Gas Pressure

Volume Goes Down, Pressure Goes

Volume Goes Up, Pressure Goes Down

Charles’s Law: a gas law stating that the volume and absolute (Kelvin) temperature of a sample of gas at constant pressure are directly proportional

Gay-Lussac’s Law: a gas law stating that the pressure and absolute (Kelvin) temperature of a sample of gas at a constant volume are directly proportional

Combined Gas Law: a gas law that states that the ratio of the product of a gas sample’s pressure and volume to its absolute (Kelvin) temperature is constant

# 16C Fluid Mechanics

Hydraulics: the branch of physics concerned with the forces within and work done by liquids

Bernoulli’s Principle: the principle that states that the fluid pressure of a flowing fluid decreases as its speed increases

# Physical Science - Chapter 16

# Fluids

# 16A Properties of Fluids

Fluids and Pressure

Fluid: any substance that can flow

Pressure: a measurement of the amount of force acting upon a unit area

Pascal: the derived SI unit of pressure

Pascal’s Principle: the principle that states that pressure applied to a fluid is transmitted throughout the fluid

Buoyancy: the tendency of an object to float when immersed in a fluid

Buoyant Force

Buoyant Force: the upward force caused by the displacement of a fluid

Archimedes’s Principle: the principle that states that an immersed object displaces an amount of fluid equal to its volume and that the weight of the displaced fluid is equal to the buoyant force acting on the object

Neutral Buoyancy: the condition when an object submerged in a fluid neither ascends nor descends because its density is equal to that of the fluid

Viscosity: a measure of a fluid’s resistance to flowing

# 16B Gas Laws

Boyle’s Law: a gas law that the pressure and volume of a sample of gas at a constant temperature are inversely proportional

Pressure and Volume

Collisions

Gas Pressure

Volume Goes Down, Pressure Goes

Volume Goes Up, Pressure Goes Down

Charles’s Law: a gas law stating that the volume and absolute (Kelvin) temperature of a sample of gas at constant pressure are directly proportional

Gay-Lussac’s Law: a gas law stating that the pressure and absolute (Kelvin) temperature of a sample of gas at a constant volume are directly proportional

Combined Gas Law: a gas law that states that the ratio of the product of a gas sample’s pressure and volume to its absolute (Kelvin) temperature is constant

# 16C Fluid Mechanics

Hydraulics: the branch of physics concerned with the forces within and work done by liquids

Bernoulli’s Principle: the principle that states that the fluid pressure of a flowing fluid decreases as its speed increases