Do smokers have a greater lung cpacity than non-smokers? Navnita Gautam and Belinda Jampoh Sir Charles Tupper Secondary Floor Location : M 4 H

Objective:
Our objective is to influence as many young teenagers and adults about smoking and how it?s affective. Also, to reduce teen smoking with the help of this project and experiment.

Hypothesis:
Based on the information we have found, we think that teen non-smokers have a greater lung capacity than teen smokers.

Materials:
* Straws
* 1 rubber tube
* 1 gallon milk jug
* 100 ?mL graduated cylinder
* food coloring
* water
* 1funnel
* 1 measuring cup
* 1 10 quart dish pan
* 1 calculator

Procedures:
1. Stick one straw in one end of the rubber tube so that at least half of it sticks out.
2. Fill the dish pan with 2 inches of water.
3. Fill the milk bottle with water. When you get it back to you desk, fill it right up to the top with the measuring cup and funnel using water from the dish pan. The water should actually stick up above the rim of the bottle.
4. Put the lid tightly on the milk bottle. If it was full enough, some water should squirt out.
5. Hold the lid while you turn the bottle upside down. Put the mouth of the bottle under the water in the dish pan. Be very careful to keep the mouth of the bottle under the water until instructed to remove it.
6. Reach under the water and remove the bottle lid.
7. Put one end of the rubber tube into the bottle.
8. Put a straw in the other end of the tube.
9. Have the first subject take a deep breath, hold their nose closed, and blow out all of the air in their lungs into the straw.
10. Reach under the water and put the milk bottle lid back on.
11. Hold the lid, take the bottle out of the water and set it upright.
12. The subject's lung capacity is the same as the amount of water that was displaced by air. You can measure it by seeing how much water is needed to completely fill the milk bottle again. Use the measuring cup, the funnel and water from the dish pan to do this. Be sure to measure the water carefully as you put it back in the milk bottle. Record the lung capacity below.
13. Since this method of measuring lung capacity has lots of room for variation, you will get a more accurate reading by repeating the measurement three times and taking the average.

Variable:
Second hand smoke and people with asthma.

Conclusion:
Based on our experiment, teen non-smokers have a greater lung capacity than teen smokers. The vital capacity of
water displaced for teen non-smokers was greater then the vital capacity of teen smokers.