NDLI: Surface Tension

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Surface Tension

Content Provider	TeachEngineering: STEM curriculum for K-12
Author	Stave, Jean Chen, Chuan-Hua Boreyko, Jonathan
Copyright Year	2013
Description	Through hands-on activities, students learn how the combination of adhesive forces and cohesive forces cause capillary motion. They study different effects of capillary motion and use capillary motion to measure surface tension. Students explore the phenomena of wetting and hydrophobic and hydrophilic surfaces and see how water's behavior changes when a surface is treated with different coatings. Surface tension accounts for many of the interesting properties we associate with water. By learning about surface tension and adhesive forces, students learn why liquid jets of water break into droplets rather than staying in a continuous stream. Through hands-on activities, students learn how the combination of adhesive forces and cohesive forces cause capillary motion. They study different effects of capillary motion and use capillary motion to measure surface tension. Students explore the phenomena of wetting and hydrophobic and hydrophilic surfaces and see how water's behavior changes when a surface is treated with different coatings. A lotus leaf is a natural example of a superhydrophobic surface, with its water-repellent, self-cleaning characteristics. Students examine the lotus effect on natural leaves and human-made superhydrophobic surfaces, and explore how the lotus leaf repels dewy water through vibration. See the Unit Overview section for details on each lesson in this unit.
Language	English
Access Restriction	Open
Rights Holder	Regents of The University of Colorado Duke University
Subject Keyword	Chemistry Physical Science Physics Water Droplet Behavior of Water Chemical Engineering
Content Type	Text
Education Level	Class X Class XI Class XII
Resource Type	Syllabus
Subject	Physics Chemistry

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