1. Obstructive Properties of Tar
An Experiment

2. What to do first … Place the funnel in the jar.
Line the funnel with filter paper
Pour water into the filter. Note how quickly it flows.

3. Try this next … Remove the wet filter paper from the funnel.
Get a dry piece of filter paper.
Spread a thin layer of molasses on one side. Place this filter in the funnel.
Pour water into the funnel.

4. Compare your findings:
Did you notice how quickly the water flows through the filter paper?
Notice how slow the water flows through the coated paper.

5. Think about it …
Think about the filter paper representing your lung tissue, and the water representing oxygen.
The molasses that you used in the second half of this experiment represents the tar found in tobacco products, like cigarettes and cigars.
This image represents a year’s worth of tar from smoking 1 pack of cigarettes per day .

6. In healthy lungs, the oxygen is able to pass through the lung tissue easier and is available for use by your body.

7. Lungs that are coated with tar do not allow oxygen exchange as well as healthy lungs without tar.