Lab 10: Fluid Flow and Static Fluid Pressure
Name Date
Assignment Submission Directions: Download this assignment sheet and complete by answering all questions. You will
need to access the simulations website in order to complete the labs. When completed, save your work and upload the
document to the Assignment Upload for graded submission. 50 points.
Items in red font require submission into a pre populated text box shown as Click here to enter text. (Note: you do not
need to fill this one in, for directions purposes only.)
Part A: Using Transformations to Graph Linear Functions
Simulation Website: http://phet.colorado.edu/en/simulation/fluid-pressure-and-flow
Learning Goals
● Investigate how pressure changes in air and water.
● Discover how you can change pressure.
● Predict pressure in a variety of situations.
● Determine how fluid motion affects the pressure.
● Figure out how to convert water pressure to water velocity.
Activity
Click ‘Run Now!’
Select ‘Grid’ option.
Using the sliding know, fill the pool with 3 meters
of water.
Set acceleration due to gravity to 9.8 m/s2.
▪ Use Pascal’s for your unit of pressure. Remember,
▪ For all of your pressures today, use four significant figures for your answers. For example, if the pressure
meter gives you 101.325 kPa you can write that as 101,300 Pa.
1. Click the pressure meter to control it. Drag the pressure meter to ground level and determine the pressure at the
ground. Record this value in the space below.
Patm = 101300 Pa
This value is the atmospheric pressure; 101300.because that is the pressure you feel when one atmosphere is on top of
you.
2. Where do you think the atmospheric pressure is the least?
• Denver, CO (1609 m above sea level) • Ocean City, NJ (0 meters above sea level)
• Death Valley, CA (86 meters below sea level) • Hillsborough, NJ (45 meters above sea level)
Denver
, Lab 10: Fluid Flow and Static Fluid Pressure
3. Explain your response:
Atmospheric pressure is the least at highest altitudes.
Part II: Gauge pressure, Absolute Pressure, and Atmospheres (atms)
Now let’s go underwater, where the pressure is different. The pressure-meter on the simulation measures absolute
pressure, the actual pressure that is occurring. Depending on our situation it may be beneficial to represent the
pressure in a different way. Gauge pressure ignores atmospheric pressure and only takes into account the fluid.
Atmospheres or atms represent the “number of atmospheres” you are experiencing.
4. Use the simulation to fill in the table below.
Depth Below Surface (m) Gauge Pressure Absolute Pressure Atmospheres
1.0 9800 Pa 111100 Pa 101300 Pa = 1 atm
2.0 19600 Pa 120900 Pa 101300 Pa = 1 atm
3.0 29200 Pa 130500 Pa 101300 Pa = 1 atm
Part III: Calculating Pressure
To determine the absolute pressure of a static (unmoving) fluid, we can apply the following concepts.
5. Summarize this formula in words.
P is the pressure measured at a depth below the surface. Po is the pressure that is measured at the surface. P is the
density of the liquid, g is gravity acceleration and h is the depth at which the pressure is measured below the surface.
6. For this next part you’ll have to decide what type of person you are. Do you want to jump into a pool full of honey or
gasoline?
• Gasoline (ρg = 700 kg/m3) • Honey (ρH = 1420 kg/m3)
Honey
7. Justify your response:
Name Date
Assignment Submission Directions: Download this assignment sheet and complete by answering all questions. You will
need to access the simulations website in order to complete the labs. When completed, save your work and upload the
document to the Assignment Upload for graded submission. 50 points.
Items in red font require submission into a pre populated text box shown as Click here to enter text. (Note: you do not
need to fill this one in, for directions purposes only.)
Part A: Using Transformations to Graph Linear Functions
Simulation Website: http://phet.colorado.edu/en/simulation/fluid-pressure-and-flow
Learning Goals
● Investigate how pressure changes in air and water.
● Discover how you can change pressure.
● Predict pressure in a variety of situations.
● Determine how fluid motion affects the pressure.
● Figure out how to convert water pressure to water velocity.
Activity
Click ‘Run Now!’
Select ‘Grid’ option.
Using the sliding know, fill the pool with 3 meters
of water.
Set acceleration due to gravity to 9.8 m/s2.
▪ Use Pascal’s for your unit of pressure. Remember,
▪ For all of your pressures today, use four significant figures for your answers. For example, if the pressure
meter gives you 101.325 kPa you can write that as 101,300 Pa.
1. Click the pressure meter to control it. Drag the pressure meter to ground level and determine the pressure at the
ground. Record this value in the space below.
Patm = 101300 Pa
This value is the atmospheric pressure; 101300.because that is the pressure you feel when one atmosphere is on top of
you.
2. Where do you think the atmospheric pressure is the least?
• Denver, CO (1609 m above sea level) • Ocean City, NJ (0 meters above sea level)
• Death Valley, CA (86 meters below sea level) • Hillsborough, NJ (45 meters above sea level)
Denver
, Lab 10: Fluid Flow and Static Fluid Pressure
3. Explain your response:
Atmospheric pressure is the least at highest altitudes.
Part II: Gauge pressure, Absolute Pressure, and Atmospheres (atms)
Now let’s go underwater, where the pressure is different. The pressure-meter on the simulation measures absolute
pressure, the actual pressure that is occurring. Depending on our situation it may be beneficial to represent the
pressure in a different way. Gauge pressure ignores atmospheric pressure and only takes into account the fluid.
Atmospheres or atms represent the “number of atmospheres” you are experiencing.
4. Use the simulation to fill in the table below.
Depth Below Surface (m) Gauge Pressure Absolute Pressure Atmospheres
1.0 9800 Pa 111100 Pa 101300 Pa = 1 atm
2.0 19600 Pa 120900 Pa 101300 Pa = 1 atm
3.0 29200 Pa 130500 Pa 101300 Pa = 1 atm
Part III: Calculating Pressure
To determine the absolute pressure of a static (unmoving) fluid, we can apply the following concepts.
5. Summarize this formula in words.
P is the pressure measured at a depth below the surface. Po is the pressure that is measured at the surface. P is the
density of the liquid, g is gravity acceleration and h is the depth at which the pressure is measured below the surface.
6. For this next part you’ll have to decide what type of person you are. Do you want to jump into a pool full of honey or
gasoline?
• Gasoline (ρg = 700 kg/m3) • Honey (ρH = 1420 kg/m3)
Honey
7. Justify your response:
