EXAM:   UV Lab Guide                               Investigating Selective Absorption of UV
EXAM Overview:   UV Lab

You will....
    1.  READ some background information

   2.  With a partner - choose a question.
   3.  Write your hypothesis and design the experiment to test your idea.
   4.  Do the experiment and record data.

   5.  Individually - write a lab report about your results.  Follow the lab report rubric.
Time limit - Due Friday, February 1, 2007   Use your class time well.


What to do

1.  Read about how the Atmosphere 'selects' or 'filters' wavelengths
         Atmospheric Windows
                http://csep10.phys.utk.edu/astr162/lect/light/windows.html
         UV and your skin 
                http://www.chemheritage.org/educationalservices/pharm/chemo/activity/uvanim.htm

        Ask questions to clarify your understanding.

2.  Select a question to research with a partner.
       1.  Topic:  Sunblock -  Does Sunblock absorb UV light? Which SPF rating will absorbe UV the most?
                  Test four kinds of sunblock

       2.  Topic:  Materials -  What materials block UV and which let UV pass through?
                  Test plastic wrap, paper, plastic, cloth, glass, medicine bottles

       3.  Topci:  Environments -  What environments have UV?
                   Test the flourescent lights, incandescent light, in the shade, under clouds, Sun

3.  Write a hypothesis.   Predict what you think will happen with the UV light and explalin your reason.

4.  Decide how you will test your hypothesis.  Design an experiment.  Discuss the design with your partner.

5.  Do your experiment carefully and record data.

6.  Write a thorough report about your research and your results.  Follow this rubric.