Hello friends, greetings to all, below I will show how we can easily do experiments in our homes only using the tools of knowledge and applying them in practice. https://k61.kn3.net/791EC222F.png ### Materials: ### 1 pack of gum with aluminum foil on one side and plain paper on the other 2 batteries. ### Process: ### a) The first thing we have to do is open the package of gum and keep the paper. https://k61.kn3.net/EB7432E64.png b) With the scissors, we cut it into two equal pieces. The first piece is left aside, you do not have to do anything with it. https://k60.kn3.net/AFE554E9E.png c) In the second we have to make two cuts so that there is a small thin filament in the center that unites the two parts. https://k61.kn3.net/B27B5BFAF.png d) To get a fire, we have to place as a base the piece of paper that we have removed before with the part of the aluminum facing upwards. https://k61.kn3.net/433679D6E.png e) Next, we put the two batteries on top, one with the positive side up and the other down. https://k60.kn3.net/B3A44AF06.png f) Finally, we also connect them to each of the pieces joined by the filament with the aluminum part facing down and wait a few seconds and we will have our survival fire. https://k60.kn3.net/55F7984AA.png # Explanation: # ## This Physics experiment can be explained by the so-called Joule effect. This explains that if we pass an electric current through a thin conductor, what happens is that it increases the temperature considerably, coming to combust when it is in contact with oxygen. ## ## In this case, the batteries emit an electric current that passes through the aluminum, which is a great conductor of electricity, causing the filament to ignite. ##