What is oobleck?
Daneesha Bhatia Harpreet Kaur
Grade 6
Presentation
No video provided
Hypothesis
“If the ratio of cornstarch to water in Oobleck is increased, than the viscosity of the Oobleck will increase, resulting in a more pronounced non-Newtonian fluid behavior In Example, it will become more solid-like when subjected to stress.”
Research
Oobleck is a non-Newtonian fluid. When you apply a lot of pressure to this substance, it acts like a solid and when you remove the pressure or apply very less pressure to it, it will act like a liquid. This is because Oobleck flows at a much slower rate when pressure is being applied to it, and when no pressure is being applied to it, it moves in a much faster rate which makes it a liquid.
Variables
Manipulated Variable- Temperature
Constant Variable- Cornstarch, water, time
Responding Variable- Texture
Procedure
Oobleck is really easy to make. All you need is some cornstarch, water and food coloring for some extra flair. It might be a bit hard to mix but once you nail it, get ready for some fun. Try playing with it, for example punch it, and you’ll see that it’s a solid. Then try putting your hand in it (slowly), you’ll be thinking that it won’t go in because it’s a solid. But you will be surprised to see that your hand will sink right in. It is because Oobleck flows at a slower rate when pressure is being applied to it making space for the hand.
Observations
Analysis
In the first trial fridge, the Oobleck was soft and was dissolving into it’s self, at 1.68. Trial 2 again was set at 1.68 degrees Celsius and was soft but had a bit of cracks in it. Trial 3 was soft but wasn’t dissolving like the first trial and did not have cracks in it.
Trial 1 freezer, was completely frozen at - 18.33 degrees Celsius started melting very slowly and smelled bad. Trial 2 was set at -18.33 degrees Celsius, fully frozen, dried out and smelled bad. Trial 3 was way more frozen than the 1st and 2nd trials, didn’t smell bad but had a rough and very unsmooth consistency.
Trial 1 room temp was set at 20.5 degrees Celsius and was completely dried out. I noticed little pieces were breaking off and had cracks all over. Trial 2 settled in 20.5 degrees celsius, dried out, lots of cracks and smelled really bad. Trial 3 was dried out as the first and second trials but wasn’t as dry, it did have cracks in it, and didn’t smell bad.
Conclusion
In conclusion, Oobleck is a fascinating substance that exhibits the unique properties of both liquids and solids, depending on the force applied to it. As a non-Newtonian fluid, it behaves like a solid when subjected to sudden force or pressure, but flows like a liquid when left undisturbed. The simple mixture of cornstarch and water not only provides a fun, hands-on learning experience but also offers insights into the science of fluids and materials. Oobleck highlights the complexity of matter and demonstrates how substances can behave differently than expected under various conditions. It’s study encourages curiosity and exploration in understanding the world of physics and chemistry!
Application
This project can help you understand the concept of non-Netonian fluids, and example of some non-newtonian fluids can be shampoos, lotions, creams, toothpaste, ketchup and etc.
Sources Of Error
The only sources of error could be, if the participants make a mistake while making the Oobleck.
Citations
Wikipediahttps://en.wikipedia.org › wiki
Oobleck: the Dr. Seuss Science Experiment
Instructableshttps://www.instructables.com › Workshop › Science
https://busytoddler.com › how-to-make-oobleck
Acknowledgement
“We would like to express our sincere gratitude to Mrs.Sharma and our families for providing us with the opportunity to explore the fascinating world of non-Newtonian fluids. This Oobleck experiment was a truly memorable experience, and we learned so much about science through hands-on exploration.”