Studied by 10 peopleFluid
A liquid or gas
Viscosity
Thick or thinness of a fluid
Flow rate
Rate at which things flow
Internal Friction
Resistance of particles to move to pass each other
Matter
Any physical stuff in the universe, not energy
Mass
Amount of matter in an object (unit is grams)
Volume
Amount of space an object occupies (unit is liters or milliliters)
Thermal expansion
Occupies more space when heated
Thermal contraction
Occupies less space when cooled
Density
Mass per unit of volume (M/V)
Buoyancy
How well an object flouts in an fluid
Hydrometer
An device that measures density in liquids
Pressure
Force (N)/Area (M)
Buoyancy force
An upwards force that an fluid applies to an object
Hydraulic System
Liquid under pressure in a closed system
Pneumatic system
Gas under pressure in a closed system
States of matter
Solid, liquid, gas
Partical theory
All matter is composed of tiny invisible particals, that are to small to see
Relationship between flow rate and viscosity
As viscosity increases, flow rate decreases
The two variables that affect pressure
Area and force applied
Circulatory system
An example of a hydraulic system
Pascal law
Pressure applied to an enclosed fluid will be transmitted without a change in magnitude to every point of the fluid and to the walls of the container
Cold air density
Has a higher density than hot air because the molecules in cold air are closer together, making it more compact and heavier than hot air
Note
Flashcard