Have you ever decided to buy balloons ahead of time to set upfor a party? Or brought balloons for a special occasion and after a day itdeflates? Even though we know balloons do not last forever, we would hope forit to last for a good amount of days.
The reason behind the deflation is thematerial latex. Latex is a rubber used to make balloons. It contains tiny holesin it which allows the helium to leave the balloons. Stemming off to myproject, the purpose of this project is to determine the rate of lift decay.The objective is to measure how the amount of buoyancy changes over time inlatex balloons. Will the helium leave the balloons at a constant rate or anon-constant rate? I hypothesize that the helium will leave the balloon at anon-constant rate.
I believe this because a balloon cannot lose the same amountof air each time its weight is taken. The materials used for the project were metal spoons,masking tape, permanent marker, digital scale, latex balloons, scissors, labnotebook, graph paper and ribbons. In this project, the independent variable isthe weight of the sets and the dependent variable is the amount of helium that leavesthe balloon over time. The controlled variables are the spoons, balloons and ribbons.When it comes to party planning, the decoration everybody runsto are balloons.
Their vibrant colors welcome guests and makes the event funand attractive. They come with different sayings, sizes, shapes and ribbonsthat makes the event festive. The bad part about balloons are that they deflatein a wink of time, especially when trying to set up ahead of time. A saggingballoon takes the celebrate out of celebration. The force that keeps theballoons in the air is buoyancy.
Buoyancy is the tendency of an object to floaton water or in air. How does the amount of buoyancy change over time in latexballoons and will the helium leave at a non-constant rate or constant rate? Whatis the rate of buoyancy loss? The main question most people have when they see theirdeflated balloons are “What makes balloons deflates?” There are many factorsthat trigger the deflation of balloons. One factor is the way the balloon isinflated. You may be shocked to hear that the way a balloon is blown up canaffect how long it lasts. Helium filled balloons tend to last much longerbecause helium balloons contain tiny helium particles while mouth blownballoons contain mostly nitrogen and oxygen. Single nitrogen and oxygen atomsare already much larger and more massive than helium atoms, plus these atomsbond together to form N2 and O2 molecules (Helmenstine, A.M.).
That is why helium filled balloons deflate faster than air filledballoons. Another factor that affects the rate of lift decay is the materialused to make balloons. As stated in the abstract, the material latex is arubber material that contains tiny holes. The tiny holes are called porous’. Anothermaterial used to make balloons is mylar. Mylar balloons have less porous’,which makes them last long.Who discovered buoyancy? How was it introduced into theworld? The person behind that is Archimedes of Syracuse. He was amathematician, physicist, astronomer, engineer, and inventor in Syracuse,Italy.
Hewas born on 281 BC and died on 212 BC. Just like how we believe Sir IsaacNewton had a moment of genius when the apple fell on his head, we believe thatArchimedes had a similar experience. The story goes that when Archimedes was inhis bathtub thinking about that challenge when out of nowhere, it struck him! He was so happy that he jumped out of thebathtub and ran down the streets naked shouting “Eureka!” The idea that struckhim was that the principle of buoyancy holds thatthe buoyant or lifting force of an object submerged in a fluid is equal to theweight of the fluid it has displaced (Gale, Thomas 2006). This idea is alsoknown as Archimedes’ principle. The way Archimedes figured this out was byhelping King Hieron II of Syracuse figure out if the crown made for him was madeof pure gold. The experiment he conducted was weighing the king’s crown, ablock of gold, and a block of silver.
He plunged each of the objects into waterand watched the water rise. By including the objects into his equation, theresult of his experiment was that the crown was less dense than the gold butdenser than the block of silver. Concluding that the crown was made ofdifferent metals. Did you know that if you leave a balloon in a hot car, itwill pop? Due to the fact that the air inside of the balloon is slowlyincreasing, the air inside the car pushes more force on the walls of theballoons and the walls of the balloon inflate to allow the incoming air. Sooneror later there will be too much air in the balloon and the walls will expandtoo much therefore making the balloon pop.
If hot air can affect a balloon,what can cold air do to it? Temperature can affect the density of a balloon andhow high it rises. Just like how hot air pops a balloon, cold air shrinks aballoon. When temperature drops, the air molecules move slower and closertogether. That is why the balloon looks deflated. The amount of gas inside theballoon is less so the walls of the balloon contract. So, if you are deciding toleave your balloons in a hot car, you might want to change your mind.
Buoyancy’s change over time effect latex balloons by allowinghelium to escape at a constant rate or non-constant. The factors that makeballoons deflate are the material it is made of, for instance, latex and mylar.One has less porous’ than the other which makes the air leave the balloonfaster.
The reason that we know about buoyancy and how it works is because ofArchimedes. He figured out that if the weight of the object is more than thedensity of the water, it will sink, and if the objects weights less than thewater, it will float. Temperature