![tonic water black light tonic water black light](https://sciencenotes.org/wp-content/uploads/2015/08/tonicwater.jpg)
Survey student knowledge of ultraviolet (or UV) light and student experience with Sun damage such as sunburns and skin cancer.Introduce the activity, telling students that they will explore ultraviolet wavelengths of sunlight, which are dangerous and cause skin damage.(You do not need to turn on the blacklight until it is time to demonstrate.) Fill two cups with tonic water and place them in front of the black light.
![tonic water black light tonic water black light](https://www.wizbiker.com/image/cache/catalog/Products/2XU/2xu-aero-men-runnng-cycling-water-resistant-jacket-black-silver-6-1000x1000.jpg)
![tonic water black light tonic water black light](https://www.tubstiles.ie/media/catalog/product/cache/bf4fb51e933cb80a9150c52f3cb2adf5/u/4/u49652_image_base.jpg)
Clear plastic bags or overhead transparency sheets.Sunscreen (the spray variety is recommended.A piece of dark cloth to darken the lamp and cups.Or, a computer with presentation software like PowerPoint.Science notebook or paper to record observations.Students will design and execute an experiment to test a question about effective methods of blocking UV radiation using a model.Students will be able to describe ways to keep skin safe from UV radiation and which methods are most effective.Students will understand that UV radiation is a part of the Sun's electromagnetic spectrum, which has shorter wavelengths than visible light.In this activity, students use a model to test actions for staying safe from the Sun's ultraviolet radiation.