Show:
Density
Viscosity
Buoyancy
Viscosity
Buoyancy
100
What is the formula for calculating density?
D = mass divided by volume
100
What is viscosity?
"thickness" of a fluid
100
If something is floating, does it have a negative or positive buoyancy?
positive buoyancy
100
What happens to viscosity when the temperature of particles increase?
Increase in temperature, increase in viscosity
100
How does a submarine control its' buoyancy?
Using air.
200
What is flow rate?
Flow rate measures the amount of fluid that passes a point in a certain amount of time
200
If something is sinking, does it have a positive or negative buoyancy?
negative buoyancy
200
What is the relationship between solubility, buoyancy, and density?
When you increase the solubility of a liquid by adding more particles, it will increase the density of the liquid which will make an object go from negative buoyancy to positive buoyancy.
300
What is the density of liquid mercury if 50 mL has a mass of 650 g?
13 g/mL
300
What is the relationship between viscosity and flow rate?
Fluids that have a high viscosity have a low flow rate
300
Buoyant force acts against the force of gravity to make an object float. It is sometimes called the ___________force
Anti-gravity force
300
Using the particle model of matter, explain how fish use air to control their buoyancy.
Air is lighter than water. Fish uses swim bladder to retain air. Air is a gas particle.
400
What happens to density when temperature increases?
Density decreases
400
What happens to viscosity when particle sizes increase?
Increase in size, increase in viscosity
400
Why do you think buoyant force is called the anti-gravity force?
It acts in the direction opposite to the gravity force to make the object float.
400
Use the concept of “average density” to explain why a hot air balloon floats.
Fire heats up the particles inside the balloon. They move faster and they spread out. They become less dense than air.
500
What happens to viscosity when there is an increase in particles?
Increase in the number of particles, increase in viscosity
500
Think about the "egg" floating lab. What did I have to do to make the egg float in a beaker?
Increase the density of water by adding more particles (sugar).