12.4 - Variations in Viscosity Flashcards
1
Q
What is viscosity dependant on?
A
The temperature of the fluid
2
Q
What happens when the temperature of the fluid rises?
A
Its internal energy increases
3
Q
What then happens to the adhesive forces between molecules and cohesive forces at solid surfaces?
A
They both decrease
4
Q
What does this cause a reduction in?
A
The viscosity of the fluid
5
Q
So hot fluids are more —–:
A
Runny
