Basics Flashcards
What is a fluid?
A fluid is anything that flows (a liquid or a gas).
What is viscosity?
Viscosity is a fluid’s resistance to flow, or how thick/thin the fluid is
TRUE or FALSE - Slower and thicker fluids are more viscous, while quicker and thinner fluids are less viscous
TRUE
How is viscosity measured?
Viscosity can be measured by its flow rate
What are the 2 main tests to measure viscosity?
The 2 main tests that we use to measure viscosity are the flow rate test and the drop time test
How does the flow rate test work?
To measure flow rate, pour liquids down a ramp with the same force and time how long each takes to reach the bottom. Then, divide the distance by the time for each liquid.
How does the drop time test work?
To perform the drop time test, drop a dense object into the fluids and time how long it takes to sink. Make sure to use an object denser than the fluids to prevent it from floating.
When you _______ the temperature of a liquid, the particles move __________ apart. This _________ the viscosity because since the particles have _______ space between them, they can slide past each other easier.
increase, further, decreases, more
When you ________ the temperature of a gas, the particles start colliding together decreases, which ____________ the viscosity of the gas
decrease, more
