Fluids Flashcards
Particles model show the properties of…
Different state
What is diffusion?
Gases our liquids mix without anything moving them, the particles are moving all the time
What are 2 examples of changing state?
Melting and freezing
What is it called when a material turns from solid to gas?
Sublimation
If you heat a solid to its melting point it forms a liquid, when this happens particles…
Evaporate
If you cool a gas it ___________ into a liquid…
Condenses
When you hear a gas the particles DO NOT expand,most what does?
The space between the particles expand
What is the definition of a fluid?
Liquid and gases
The force of particles hitting things is called…
Pressure
The two forces against a hot air balloon or a boat are called…
Weight and upthrust
Density is measured in….
1g/cm
Particles don’t move they…
Vibrate
What is density measured by?
A Newton meter
What is drag?
Any object moving moving through water or air will have a resistance force on it to slow it down, this is drag. An example is air resistance
Why is streamline better?
The faster the object is moving, the more fluid has to be pushed out of the way per second
