Fluid Dynamics and Properties

Flashcard
•
Science
•
5th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is viscosity?
Back
Viscosity is a measure of a fluid's resistance to flow. It describes how thick or sticky a fluid is.
2.
FLASHCARD QUESTION
Front
What is surface tension?
Back
Surface tension is the elastic-like force existing on the surface of a fluid, caused by the attraction of molecules. It allows small objects to float on the surface.
3.
FLASHCARD QUESTION
Front
What is fluid mechanics?
Back
Fluid mechanics is the study of fluids (liquids and gases) and the forces that act on them.
4.
FLASHCARD QUESTION
Front
What happens to a marshmallow in a vacuum?
Back
A marshmallow expands in a vacuum because the air pressure around it decreases, allowing the gas inside to expand.
5.
FLASHCARD QUESTION
Front
What is buoyancy?
Back
Buoyancy is the upward force that a fluid exerts on an object placed in it, which can cause the object to float.
6.
FLASHCARD QUESTION
Front
What is density?
Back
Density is the mass of a substance divided by its volume. It determines whether an object will float or sink in a fluid.
7.
FLASHCARD QUESTION
Front
What is the relationship between density and buoyancy?
Back
An object will float if its density is less than the density of the fluid it is in; it will sink if its density is greater.
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