Particle Theory
Substances that flow
Fluids
Viscosity is the ____________ of a fluid
Density =
Mass ÷ Volume
The upwards force that helps something to float
What is Buoyancy?
All substances are made up of this.
Particles
Fluids with ___________ do not flow as easily
High Viscosity
Gas is ________ dense compared to a solid and liquid
Less
The less dense object will always __________
Float
Particles in this substance are packed together tightly and move around slowly.
Solids
When a liquid is heated it is ______ viscous
Iron weighs 300g and takes up a volume of 15mL. What is the density?
20g/mL
Objects float because .............
Upwards force is greater than gravity.
This process helps particles move faster and further away from each other.
Increasing Temperature
When a gas is heated it's ________ viscous
Density depends on ........
The mass of particles and how tightly particles are packed together
Objects sink because ......
Gravity is greater than the upwards force.
This substance has particles that are far apart from each other which makes the substance seem invisible.
Gasses
Flow Rate =
Volume of Fluid ÷ Time
Hot air balloon's float because ..........
The bursts of heat make the air in the balloon less dense than the air surrounding it.
The buoyant force is EQUAL to how much weight of the fluid is displaced by the object
What is Archimedes Principle?