======Viscosity With Marbles====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Marble Drop Viscosity Race ====Summary==== {{$demo.summary}} ====Procedure==== - Gather several clear glasses or jars and fill each with the same volume of different liquids (e.g., water, oil, syrup, honey). - Place a ruler across the tops of the glasses and rest one marble above each liquid. - Tip the ruler so that all the marbles fall into their liquids at the same time. - Observe which marble reaches the bottom fastest and slowest. - Record results and discuss how viscosity explains the differences. ====Links==== Viscosity Race - FlinnScientific: {{youtube>977wNbFiYlc?}}\\ 📄 Viscosity Experiment With Marbles - Little Bins for Little Hands: [[https://littlebinsforlittlehands.com/viscosity-experiment/]]\\ ====Variations==== * Test temperature effects: compare marbles falling in warm syrup versus cold syrup. * Try additional liquids such as shampoo, ketchup, or molasses. * Measure exact times using a stopwatch for more accurate data. ====Safety Precautions==== * Use glassware carefully to avoid spills or breakage. * Clean sticky liquids like honey or syrup promptly to avoid attracting insects. * Keep marbles away from small children who may put them in their mouths. ====Questions to Consider==== * Which liquid allowed the marble to fall fastest? Slowest? Why? * How does viscosity relate to the thickness or stickiness of a liquid? * How does temperature change viscosity? * What real-world examples show how viscosity matters (e.g., motor oil, lava, honey on pancakes)? * How could you design a fair race to get measurable and repeatable results?