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Fluids

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Fluids BELLWORK in NOTES What does it mean to be fluid? TN Standards CLE.3202.1.8 Investigate relationships among the pressure, temperature, and volume of ... – PowerPoint PPT presentation

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Title: Fluids


1
Fluids
  • BELLWORK in NOTES
  • What does it mean to be fluid?

2
TN Standards
  • CLE.3202.1.8 Investigate relationships among
    the pressure, temperature, and volume of gases /
    liquids
  • CLE.3202.Inq.3 Use appropriate tools and
    technology to collect precise and accurate data
  • CLE.3202.Inq.6 Communicate and defend
    scientific findings

3
NOTES
4
Fluids
  • Liquids and gases are considered fluids
  • Their particles move easily
  • across each other
  • Around each other
  • They flow ( like water flowing down a stream )

5
Fluids
  • Fluids vary at the rate with which they flow
  • Fluids move faster through small areas than
    through larger areas, if the overall flow rate
    remains constant.
  • Bernoulli Effect
  • Fluid pressure
  • decreases as speed
  • Increases

6
Viscosity
  • Viscosity is the resistance of a gas or liquid to
    flow
  • Thicker fluid is more viscous
  • Depends on particle attraction
  • Honey vs Lemonade?

7
Common Examples of Fluids
  • 2 oclock groups PARTNERS
  • Take Notebooks
  • In Notes, list 10 common fluids you can think of
  • 5 should be a gas
  • 5 should be a liquid

8
Common Examples of Fluids
  • Gas oxygen, nitrogen, carbon dioxide, carbon
    monoxide, helium
  • Liquids mercury, water, honey, lemonade, olive
    oil

9
Properties of Gases
  • Expand to fill their containers
  • Spread out easily and mix with each other
  • Have low densities and are compressible
  • Mostly empty space ( unlike solids liquids )

10
PhET Simulation Lab Groups
  • THIS WILL BE GRADED AS A LAB GRADE
  • Each student turns in their own paper

11
PhET Simulation Study Groups
  • Go to station log into labtop
  • PhET website ( google PhET 1st link )
  • Search Fluids
  • Choose Fluid Pressure and Flow
  • Run simulation

12
Label Paper
  • Fluid Pressure and Flow Simulation

13
Pressure tab
  • Start with Pressure tab
  • Fill up the hole ( choose 1st image on upper
    left )
  • Drag pressure gauges to the bottom, middle, and
    top
  • 1 Write down Full container of water and each
    those three pressure readings
  • Example Top 101.4 kPa

14
Pressure tab
  • 2 Do the pressure readings increase or decrease
    as you go from the water surface to the bottom of
    the hole?
  • 3 Explain why. Relate to the equation for
    PRESSURE

15
Flow tab
  • Go to the Flow tab
  • 4 What is the initial Flow Rate ( upper left )?
  • Use yellow handles on pipe to make the middle
    section more narrow
  • 5 What happens to the flow of particles in the
    narrow section?
  • 6 Explain why ( look in todays notes ). USE
    PRESSURE GAUGES ( 1 IN THE NARROW 1 IN THE WIDE
    PART )
  • LAST THING decrease flow rate to 2000 L/s and
    observe

16
Exit Pass Water Tower
  • DO WITH LAB QUESTIONS
  • Go to Water Tower tab
  • QUESTION as the tower is filled up, how should
    the pressure change at the bottom of tank (
    increase or decrease )?
  • Try it out and see drag a pressure gauge to
    bottom of tank, then turn the water on at top
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