Science Fluids Test

Review For Science Fluids Test On Monday April 17 2023

Fluid

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