Cornell University
Hydrophobic Surfaces—Deposition and Analysis
Couches, carpets, and even computer keyboards now advertise they are spill-resistant, but what does that mean? Scholars use physical and chemical methods to coat surfaces with thin films to test their hydrophobic properties. Then they...
Concord Consortium
Protein Folding
Long strings of amino acids fold themselves into stable peptides. The simulation allows scholars to observe the process in multiple ways. Using hydrophobic, hydrophilic, or a combination of proteins in three different solutions, the...
LABScI
Surface Tension: Liquids Stick Together
Use science to help you walk on water! Young scientists explore the properties of liquids including cohesion, adhesion, and surface tension. They use graphs to compare different liquids and make predictions about their molecular attraction.
TryEngineering
Nano Waterproofing
Does your shirt hate water? In the activity, future engineers observe the hydrophobic effect in fabrics. They brainstorm and test some ideas for waterproofing fabrics.
Teach Engineering
Exploring the Lotus Effect
The Lotus Effect ... is it not some kind of yoga pose. In the last installment of a nine-part series, young scientists observe the Lotus Effect on lotus leaves and water-repellent cloths. They observe how motion and damage affect the...
Teach Engineering
Superhydrophobicity – The Lotus Effect
Discover and demonstrate the Lotus Effect and superhydrophobic surfaces with the eighth installment of a nine-part series that teaches scholars about surfaces that exhibit superhydrophobicity. The lesson continues also describes...
Teach Engineering
Investigating Contact Angle
Discover the properties of water-loving and water-hating surfaces. In the seventh installment of a nine-part series, scholars explore hydrophilic and hydrophobic surfaces by conducting an experiment. They observe surface coatings,...
Teach Engineering
Wetting and Contact Angle
Explore terminology related to water droplets. The sixth installment of a nine-part series teaches young scientists about wetting and contact angles between water droplets and surfaces. It also distinguishes between hydrophobic and...
Teach Engineering
Density Column Lab - Part 2
Groups suspend objects within layers of liquids to determine the densities of different liquids and compare them to the densities of objects calculated in Part 1. The groups then carefully test their calculations by layering the liquids...
Teach Engineering
Density and Miscibility
The liquids did not mix — so what do density columns have to do with it? The seventh part in a series of nine provides the theoretical explanation of why density columns do not mix. The lesson covers the topics related to mixing and...
Institute of Electrical and Electronics Engineers
Waterproof that Roof!
Learners design and build model houses, with an emphasis on waterproof roofs. They perform tests to see if their models are as waterproof as they think.
Curated OER
A Whiff of Danger
Public health trainees read and write a summary of the article, "A Whiff of Danger". The article is not available through the link, but can be found on the National Center for Biotechnology Information website. After summarizing,...
Curated OER
Modeling the Cell Membrane
For this membrane permeability worksheet, students read introductory information about the cell membrane structure as it pertains to permeabillity and draw a representation of the membrane as they complete a lab. Students record the...
Curated OER
Nano Waterproofing
Learners experiment to determine a way to waterproof a piece of cotton fabric. In this scientific inquiry lesson, students use reference worksheets to explore waterproofing and the use of nanotechnology in engineering everyday objects.....
Curated OER
The Cell Membrane
In this cell membrane worksheet, students use the Nelson Biology text to complete the blanks. Students then sketch and label two figures found within the text.
PBS
Pbs Teachers: 21st Century Medicine: Virtual Fear
Explore phobias - irrational fears of an object, situation or activity - and how sufferers endeavor to avoid the cause of their extreme anxiety. Perform activities to explore center of gravity, and describe its effect on sufferers of...