Huffing and Puffing to Understand Slope or Smoke and You Croak Lenny VerMaas, ESU 6
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.
Think AboutHow much air will your lung hold? How could we measure that volume?
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.
Learning Vocabulary • consider special strategies to help students learn the terms • circle, circumference, radius, diameter, sphere, locus of points, directly proportional, and inversely proportional
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.
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.
Cir-cumference Vol. in liter Diameter in cm Radius in cm Plotting Your Data
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.
Attach Straw Carefully to Balloon • See how far and how fast it will travel down a string.
Down the String • Measure the time and distance. Use this data to calculate the speed