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Project title Determining the effectiveness of different sunscreen products in blocking ultraviolet (UV) radiationFeatured science projectScience project video
Difficulty Level Middle school
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Are sunscreen lotions with higher SPF (sun protection factor) values necessarily more effective? They certainly cost more! Is there a co-relation between cost and effectiveness? The objective of this science fair project is to determine the effectiveness of various sunscreen products, by comparing their SPF values values The amount of UV radiation that is blocked, will be measured through the use of a UV meter 

Instructions preview
1. The independent variable in this science fair project is the brand of the sunscreen used and their respective SPF values. The dependent variable is the level of UV index detected after applying the sunscreen. The amount of UV radiation present is measured using the UV meter. The constants (control variables) are the time at which the measurements are taken, the intensity of sunlight on the day of the experiment, and the geological location of the testing area. 2. Divide the sunscreen products into 3 groups according to their SPF value. Within each group, label each brand as A, .....
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