Inventing the device for verifying that smoking is harmful to health

We all know that smoking is harmful to health, especially to the lungs. A large number of studies have shown that the incidence of lung cancer in smokers is 20 to 25 times higher than that of the average person, and is positively correlated with the amount of smoking and the length of smoking. Cigarettes burning smoke contain more than a thousand kinds of chemicals. When nicotine is inhaled into the human body, it will have adverse effects on tissues such as heart and blood vessels, causing sympathetic nerves to cause vasoconstriction due to abnormal excitation, and the heart has to accelerate. Then the blood pressure will rise. Some scholars have done such a report. If only one or two cigarettes are smoked, the index of blood pressure will change. If a few dozens of packs are taken in a year, the accumulation of such a few decades will definitely have adverse effects. Smoking has become a recognized cause of cancer. Epidemiological investigations have shown that smoking is one of the important pathogenic factors of lung cancer, especially squamous cell carcinoma and small cell undifferentiated carcinoma. Smokers are 13 times more likely to develop lung cancer than non-smokers, and the risk of developing lung cancer will be higher.

I used winter vacation to create an experimental device to verify the effects of smoking on the lungs:

Design goals:

Demonstrate experiments to understand the serious harm of smoking to the body. In this way, the students will be guided to carry out “refusal to smoke” and “persuade action” to carry out innovative activities. In the event, I knew that I consciously refused cigarettes, safeguarded my rights and interests, and maintained the environment.

Device material:

a transparent bottle of bottles, cigarettes, rubber film, facial tissue, etc.

Device production:

Take the bottle cap and drill a hole in the cap to make a cigarette get stuck. Put the bottle on the bottom and glue it on the rubber film with a glue. The tightness should be moderate, along the inner edge of the bottle cap. A layer of tissue paper is attached and the cap is closed, so that a simple experimental device is completed.

Experimental operation process:

Ignite a cigarette, insert it into the hole that the bottle cap has been punched before, ignite the part upwards, simulate the smoking process of the population, pull the rubber film at the bottom of the mineral water back and forth, simulate the breathing of the person, and then smoke will enter the bottle. Gradually, the facial tissue will turn yellow, and a lot of smoke oil will be attached to the paper towel, and if the rubber film is pulled for a long time, a layer of dust will be formed in the bottle. .

Experimental summary:

Through the use of materials, this experiment simulates the process of human body smoking harm to the human body, the pulling of the rubber film, simulating people's continuous breathing, facial tissue to simulate the human lung lung alveoli, the bottle simulating the human lung, and finally verifying the harmful effects of smoking through a series of experiments. health. It also explains the effect of smoking on the human lungs, and thus warns people not to smoke. The materials of this experimental device are completely taken from life. They are some of the things around them, and they are a practical illustration of the harmful effects of smoking. Easy to operate, the experimental results clearly enable everyone to understand the experimental results intuitively, so that everyone understands that smoking almost damages all vital organs of the human body. Many people disagree with this because it takes time to prove, but we will never do the experimental products of this experiment! It will enable the students to understand the harm of the smoke to the human body through their own experiments, so as to keep the students away from cigarettes, refuse to smoke, and always say “No!” to the cigarettes, it can also stimulate the students’ interest in learning and encourage the students to keep on Innovation, continuous efforts, rushing toward the world of science! Rush! Rush! For our own health, we appeal to all students to consciously stay away from cigarettes and persuade their relatives and friends to stop smoking as much as possible. After all, cigarettes are bad for us; after all, the air without smoke will be more fresh, and the life without tobacco will be even more gorgeous! Classmates, let us act, start from now, start from the self, strictly control tobacco, and publicize more people's public welfare knowledge that is harmful to health, and call on the whole society to cherish the lives of themselves and others, consciously control tobacco, and resolutely Reject "secondhand smoke." Make our sky more blue! Make our tomorrow more brilliant!

Junior High School, Magushuang Town, Penglai City: Sun Jinyu