Science - Fluids Flashcards
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What is a fluid?
A fluid is something that flows, with no fixed shape.
What are the types of matter that can be classified as fluids?
Gasses and liquids
How much of the human body is water?
60-70% water
What are some common fluids in the human body?
oxygen, blood, sweat, saliva, urine, and stomach acids
How is oxygen used in the body?
Oxygen helps the body get energy from food.
How is blood used in the body?
It moves materials and waste in and out of the body.
How is sweat used in the human body?
It cools down the body
How is saliva used in the human body?
moistens food to make it easier to swallow
How is urine used in the human body?
It takes waste out of the body
How are stomach acids used in the human body?
They help the body digest food.
What are the three systems in your body that use fluids?
The circulatory system, the respiratory system and the urinary system.
What are some everyday examples of fluids?
Juices, water vapor, oil , lava, blood etc.
What are some everyday substances that do not classify as fluids?
clay, ice , sugar, muscles
What is another name for particle theory?
The kinetic theory of matter
What does the particle theory of matter explain?
The particle theory of matter explains why fluids behave the way they do.
What are the five points of the particle theory.
- All matter is made of tiny particles
2.Particles have empty space between them
- particles are moving randomly all the time
4.particles move faster and spread further apart when they are heated
- particles attract one another
What are the particles like in a liquid.
The particles in a liquid can slide past each other
How can the particles move in a solid?
The particles are tightly packed and only vibrate in place
How can the particles move in a gas?
The particles in gas have large spaces between them and spread out to fill their container.
What are the two types of flow?
Turbulent flow and laminar flow.
What is the differences between laminar and turbulent flow?
Turbulent flow is choppy and irregular and laminar flow is smooth and regular.
What is eddy?
Its is a slower moving flow that occurs behind an obstacle
What is an example of turbulent flow in the human body?
Plaque build up can cause blood to flow turbulently in your body.
What are two characteristics of fluids?
- Fluids don’t have a definite shape
- Fluids particles are able to slide past each other (able to flow)
What is a flow rate?
A flow rate measures the volume of fluid that moves past a certain point in a given amount of time.
What are the four factors that can affect flow rate.
- the type of fluid
- the force pushing on the fluid
- the size of the pipe of opening the fluid is flowing through
- The surface the fluid is flowing over
What is VIscosity?
Viscosity is the thickness of resistance to flow
What happens to a fluids appearance and Flow rate when it is more viscous
The appearance is thicker and the flow rate is slower
What is cohesion?
Cohesion measures how strongly particles are attracted to one another. Cohesion is a reason for viscosity
What is surface tension?
Surface tension is the cohesion of a liquid on the surface
What is adhesion?
Adhesion measure how strongly particles of a fluid are attracted to another substance.
What is an example of turbulent flow?
Water flowing on rocks, waves
What is an example of Laminar flow?
Water coming out of a hose
What is an example of Laminar flow in the human body?
when the human body is healthy blood will have a laminar flow
Why cant solids flow?
Solids are unable to flow because the particle aren’t able to move they only vibrate in place which doesn’t allow them to flow. Solids also have a definite shape and fluids don’t
When you tip a bottle of syrup upside down, it take a long time for all the syrup to flow why?
Maple syrup takes longer to flow because it has a higher Viscosity, which means is is a thicker fluid. Maple syrup’s cohesion is also higher which means its particles are strongly attracted to one another. The last reason it take maple syrup longer to flow out of its container is because of the adhesion of the bottle to the maple syrup
