Join Nada El-Aji, CIM, M.A. Watch the drop carefully as it grows. Drops On A Penny Lab Worksheet Answers Promotiontablecovers from promotiontablecovers.blogspot.com. Cohesion is the stickiness of like molecules to one another. Which ones make the biggest (or smallest) drops? In this lab, students will investigate adhesion and surface tension by comparing water droplets on a penny vs. water/soap mixture. This lesson is the first unit of a 5 part module entitled Genetics: The Science of Heredity developed by ETA Cuisenaire. Extra: try using something other than a penny to collect the drops. /Contents 7 0 R You can find this page online at: https://www.sciencebuddies.org/stem-activities/measure-surface-tension-with-a-penny. tension can be measured and observed by dropping water (drop by drop) onto a penny. Reproduction of material from this website without written permission is strictly prohibited. Curious about the science? <> stream Record the hypothesis on the worksheet. Worksheet Drops On A Penny Lab Cohesion Water molecules are to other water molecules. k#+~wc`'bK.-',AiD2?k};{i(g!^ tz= Yl-~VA,eh%}wgwlqg!M.zJ~ %nqxX~[c/uWuB@Q4 >3Fb[}L#$j#M`>|o6~\4^t-Am<7/6z>l7WV)tubA
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0vFg@g%)t|t: Surface tension is the result of all the water molecules sticking together. Record the number of drops for that trial on the table below: 5. Step 2: Place the penny on paper towel. Stretch your way into different animal movements and poses to learn how they move, get food, and protect themselves. Students observe a model waterwheel to investigate the transformations of energy involved in turning the blades of a hydro-turbine. Now, think about washing dirty dishes or clothing. 5 0 obj Be sure to hold the eyedropper straight up and down. a. STEM Library Lab fosters high-quality active learning by providing teachers and students with access to equipment and support to drive academic success. PDF Drops on a penny - chymist.com However, molecules near the surface of the droplet are pulled mostly inward by the water molecules below them. Fold a paper towel so that it fits inside your dish. Portion on Reddit. endobj document.getElementById( "ak_js_6" ).setAttribute( "value", ( new Date() ).getTime() ); 3011 N I-10 Service Rd EMetairie LA 70002504.517.3584. Results for scientific method project graphic prganizer