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Understanding Fluid Dynamics and Pressure: Key Concepts Explained

This lesson explores the fundamental concepts of fluids, pressure, and buoyant forces. Students will investigate the relationship between pressure, temperature, and volume of gases and liquids, utilizing simulations and hands-on activities. Through examples like balloons and submarines, learners will observe how pressure changes with volume and why larger balloons contain higher pressure. The session culminates in a challenge to apply mathematical relationships between force and area, reinforcing the principles of buoyant force and fluid dynamics. Prepare for an engaging exploration of these essential scientific concepts!

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Understanding Fluid Dynamics and Pressure: Key Concepts Explained

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  1. Fluids BELLWORK : What does it mean to be fluid?

  2. BELLWORK - Pressure • What is pressure?

  3. BELLWORK - Pressure • What is pressure? • Feeling forced to do something • A force needed to squash an object • Force exerted per unit area of a surface

  4. 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

  5. PhET simulation • Heat water to steam ( turn heat up at bottom ) • What happened to pressure in a closed container? • So why does the container ‘splode??

  6. Balloons • While it is running, we’ll use balloons as an example of pressure • How does amount of gas in balloon relate to its size?

  7. Balloons • What direction is the gas inside the balloon pointing to?

  8. Balloons • What direction is the gas inside the balloon pointing to?

  9. Balloons • What can we say about the pressure found in balloons of different sizes? ( start out the same size ) • Small one • Big one

  10. Balloons • What can we say about the pressure found in balloons of different sizes? ( start out the same size ) • Small one • Big one PRESSURE IS LARGER IN THE BIGGER ONE

  11. Challenge • What is a possible mathematical relationship for pressure? • Force and surface area are involved • What are independent and dependent variables?

  12. Pressure • Force exerted per unit area of a surface • Pressure = F / A ( force divided by area )

  13. Buoyant Force • A buoyant force pushes the boat up • All fluids exert an upward buoyant force on matter

  14. Work with Partners • Study Guides • Pg 12 • #2, 3 ( put in N / cm2)

  15. Challenge / Exit Pass • Consider a submarine at the bottom of the ocean. • What is the water doing to the submarine • Why does the submarine not get crushed?

  16. PLC Day / Upcoming in Week • Gonna watch stuff ‘splode ?? • Open-Notes Quiz Thursday/Friday

  17. Exit Pass

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