Lessons 8 - 11 Flashcards
Tell me what viscosity is
It’s a substance’s resistance to flow. How thick or how thin a substance is.
Does a substance with a high flow rate have a high viscosity?
No, the faster a substance flows, the less viscous it is.
Viscosity increases when temperature decreases. True or False?
True!
Density is…
the amount of matter in a given volume
Tell me the formula for density
Density = Mass/Volume, D = m/v
When spaces between particles increase, what happens to density?
Density Decreases.
When you increase mass, you also increase density. True or False?
True!
What is Buoyancy
an object’s tendency to FLOAT on top of a fluid
Compressibility
extent to which matter can be squeezed together
Pressure is
how much force is applied to a given area
What is pressure measured in?
Pascals (Pa)
Formula for pressure is…
Pressure = Force/Area, P = F/A
The reason why you can compress a gas but not a liquid is…
Gases have more space in between their particles.
