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Fluids. BELLWORK : What does it mean to be fluid?. BELLWORK - Pressure. What is pressure?. 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. TN Standards. - PowerPoint PPT Presentation
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Fluids
BELLWORK : What does it mean to be fluid?
BELLWORK - Pressure
• What is pressure?
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
TN Standards
CLE.3202.1.8 – Investigate relationships among the pressure, temperature, and volume of gases / liquidsCLE.3202.Inq.3 – Use appropriate tools and technology to collect precise and accurate dataCLE.3202.Inq.6 – Communicate and defend scientific findings
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??
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?
Balloons
• What direction is the gas inside the balloon pointing to?
Balloons
• What direction is the gas inside the balloon pointing to?
Balloons
• What can we say about the pressure found in balloons of different sizes? ( start out the same size )
– Small one– Big one
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
Challenge
• What is a possible mathematical relationship for pressure?
• Force and surface area are involved
• What are independent and dependent variables?
Pressure
• Force exerted per unit area of a surface
• Pressure = F / A ( force divided by area )
Buoyant Force• A buoyant force pushes the boat up
• All fluids exert an upward buoyant force on matter
Work with Partners
• Study Guides
• Pg 12
• #2, 3 ( put in N / cm2 )
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?
PLC Day / Upcoming in Week
• Gonna watch stuff ‘splode ??
• Open-Notes Quiz Thursday/Friday
Exit Pass