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Project title Comparing water repelling productsFeatured science projectScience project video
Difficulty Level Middle school
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This science fair project was conducted to evaluate the water repelling properties of glass coatings used on a car's windshield. Tests were done to compare between two brands of repellent - Rain-X and Aquapel. 

Instructions preview
1. For this science fair project, the independent variable is the angle at which the glass is slanted and the brand of water repellent used. The dependent variable is the time taken by the water to flow 10 cm down the surface of the glass sheets. The constants (control variables) are the smoothness of the glass surface, the distance the water droplet travels and the room temperature. 2. Two glass sheets are marked “Rain-X” and “Aquapel” with the black marker pen. The water repellent solutions are wiped on the glass surface using a piece of cloth. The brand of .....
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