Huffing and Puffing to Understand Slope or Smoke and You Croak
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Transcript of Huffing and Puffing to Understand Slope or Smoke and You Croak
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Huffing and Puffing to Understand Slope
or Smoke and You Croak
Lenny VerMaas, ESU 6
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Smoke and You Croak
• Handouts—will come at the end
• There is one sheet that will be completed during the activity. A clean sheet is in the handouts. Electronic copies of the handouts are on my web page.
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Think About
How much air will your lung hold?
How could we measure that volume?
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What will affect your lung capacity?
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Scientific Vocabulary
• inspiratory reserve volume• vital volume• expiratory reserve volume• residual volume• vital capacity• total lung capacity• For exact definitions visit your friendly
science teacher.
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Picture of lung capacity
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Learning Vocabulary
• consider special strategies to help students learn the terms
• circle, circumference, radius, diameter, sphere, locus of points, directly proportional, and inversely proportional
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How can the volume of a person’s lung be measured?
• Accurately using a spirometer
• Approximation—water displacement or blowing up a balloon.
• Estimate the Volume of Your Lung– Think of a 2 liter pop bottle.
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Here is the MATH
3
3
4rV dC
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A Worked Out Example
C
d 2
dr 3
3
4rV
42C 7.1342
d 7.62
7.13r
33 12517.63
4cmV
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Cubic centimeters to liters
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Here We Go
• Take a balloon and with one breath blow as much air as possible into the balloon.
• Measure and record the circumference of the balloon.
• Keeping the air in the balloon add another breath and measure and record the circumference.
• Add one more breath, measure and record the circumference.
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Fill out the chart
Circumference Diameter RadiusVolume in
cubiccentimeters
After Breath 1
After Breath 2
After Breath 3
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Measure the circumference after one breath.
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Concentrate and Measure
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Measure Circumference After 2nd Breath
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Measure the circumference after the third
breath
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How Big Can Your Balloon Go?
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What to do if your balloon looks like this?
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Plotting Your Data
Diameter in cm
Cir
-cu
mfe
renc
e
Radius in cm
Vol
. in
li
ter
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Time to Collect Data
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• Circumference vs diameter Radius vs volume
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Save Your Balloon For Some More Fun
• Attach a straw and see how far and fast it will travel down a string.– Where can the straw be attached for
maximum speed and distance.– Does the length of the straw make a
difference.
• Blow up the balloon, release the balloon, measure the time in the air, plot circumference vs time in air.
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Blow up the Balloon
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Attach Straw Carefully to Balloon
• See how far and how fast it will travel down a string.
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Down the String
• Measure the time and distance. Use this data to calculate the speed
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