Particle Theory
Density
Viscosity
Displacement and Buoyancy
100
True or False:
Everything around us is made up of tiny particles that are always moving.
True
100
The equation to calculate density is: D = M รท V. What do M and V stand for?
M is mass, V is volume
100
True or False:
A very viscous fluid can be described as sticky.
True
100
True or False:
When an object is dropped into water it does not move the water.
False
200
What states of matter are considered fluids?
Gases and Liquids
200
What state of matter is typically the least dense?
Gases
200
If you increase the temperature of a liquid, what happens to its viscosity?
Its viscosity decreases, it becomes more runny.
200
What is the volume of one red ball?
1 ml
300
What happens to the particles of an object when the object is heated?
The particles move faster.
300
A piece of metal has a volume of 20 cm3 and a mass of 45 g. What is its density?
2.25 g/cm3
300
How does particle size affect viscosity?
Fluids made from large particles are more viscous than fluids made from small particles.
300
A piece of wood is dropped in water. The buoyancy force is greater than the force due to gravity. What happens to the piece of wood.
It floats!
400
In which state of matter do particles have the strongest attraction to each other?
Solids
400
What liquid is the most dense?
Honey
400
Why is 2% milk more viscous than skim (0%) milk?
It has a higher concentration of fat particles.
400
How does a submarine change its buoyancy to allow it to sink, float, and stay at a certain depth?
It fills its ballast tanks with water, air or a mixture to adjust its buoyancy.