Flow Rate
Compared to water, corn syrup would have a __________ flow rate.
Slower, lower.
Weak attractive forces in a substance would make the viscosity very ____________.
Low
What is the formula for density, mass and volume?
D = M/V
M = v x d
v = m/d
Buoyancy is a force that ______________ in a fluid exert on objects.
Particles
If a fluid traveled 10cm in 4 seconds, what is the flow rate?
10cm/4s = 2.5cm/s
If a fluid's viscosity was too low, how could you change it?
You could reduce the temperature to slow down the particles.
The combined density of all substances in a given volume is called the ____________ _________ of that object.
average density
The two forces acting on objects in a fluid are __________________ and _____________ ____________.
gravity, buoyant force
To increase the flow rate of a liquid without adding or removing chemicals, you could....
Increase the temperature
What are three examples of needing a fluid with high viscosity?
Answers vary. Are they thick substances that resist flow?!
You pour a liquid that has a mass of 15g, and a volume of 2ml into water. Will it sink or float
Sink
d = m/v
d = 15g/2ml = 7.5g/ml
7.5g/ml > 1g/ml (water) = sink!
How are buoyancy and density connected?
If a fluid is not dense, the buoyant force will be weaker because there are more particles to push upward on the object.
Quantitative - numbers.
What are five examples of low viscosity fluids?
Answers vary. Are they thin fluids that do not resist flow?
How can you make something a substance more dense without changing the chemicals or substance?
Compress it (Cartesian Diver) or decrease the temperature.
Your density is the same as the fluid around you, and you have achieved neutral buoyancy
The concept of flow rate is most connected to which point of the particle model of matter?
Particles have attractive forces between them. They can be strong (slow flow rate) or weak (fast flow rate).
What might happen if the viscosity of our blood is not correct? I'll give you a minute :)
Too thick = heart attack, our heart cannot continue to pump a thick fluid through our veins.
Too thin = we could lose a lot of blood because the blood cannot clot and is flowing too quickly.
Provide two examples of using less dense substances and two examples of using more dense substances used in real life situations.
There are three swimming pools. One filled with oil, one filled with tap water, and one filled with sugar water.
Which pool would be easiest to float in? Why?
Sugar water pool. Oil is less dense than water. Sugar water is more dense than water because there are sugar particles dissolved in it. Sugar water would have a stronger buoyant force than tap water.