egg+in+a+flask

EGG IN A FLASK

MATERIALS**: Hard boiled egg, flask, matches, paper towel, and a scoop (for clean up)

2. After letting the paper towel burn for a couple of seconds, put it in the flask. 3. Put the egg on top of the flask. 4. Once the egg is in the flask, use the scoop in order to get the egg back out of the flask.
 * PROCEDURE**: 1. Light a match, and then light the paper towel with it.

**EXPLANATION**: This demonstration is all about air pressure and how temperature effects air pressure. In the beginning of the demo, everyone is able to see that the egg is obviously too big to fit in the flask with the small opening. How can the egg possibly make its way into the flask? Different air pressures outside and inside the flask will be the significant factor here. However, at the beginning, the egg only sits on top of the opening because the air pressure inside and the air pressure outside the flask are the same. Therefore, there is nothing besides gravity pushing the egg down. Gravity will not be a strong enough force to put the egg into the flask. In order to create a force pushing down on the egg, the air pressure inside the flask weaker than the air pressure on the outside. By increasing the temperature in the flask, the desired air pressure is achieved. This is done by adding the flaming paper towel. The heated air wants to escape out of the flask. So, the air tries to make itself around the egg, making the egg shake on the top of the flask. The air cools, the egg gets pushed a little lower into the opening. There is less air in the flask than before, so there is less pressure. With weaker air pressure, the egg is pushed into the flask.


 * PRACTICAL APPLICATIONS**: Hard boiled eggs are fun to eat. They are healthy, too. There are many different types of eggs in the world, varying from chicken eggs to ostrich eggs to fish eggs, etc.​ Also, fire is used in many everyday uses like cooking and setting houses on fire. However, being too obsessed with fire can be a very bad thing.


 * WORKS CITED:** I do not have a works cited because we did this demo in class. I remembered how to do the complete demo since it is only a couple of steps, and Mrs. Klein's amazing teaching is the reason why I did not need to look at a website in order to know how the demo works. We learned about air pressure and temperature in class.