Does the Sun Protection Factor (SPF) rating of a sun block lotion make a difference in the amount of protection that the lotion provides?
Kristyn F.
5th Grade, Challenger 7 Elementary, Cocoa, Florida
Teacher: Ms. Johnson
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Hypothesis:
I think that the Sun Protection Factor (SPF) does make a difference
in how much protection the lotion provides. (Professor Sunny’s
note: Kristyn used different SPF levels of the same brand of sun
screen to minimize any difference between brands. Also, all of the
samples were new, as sun screen can degrade with age)
Results:
The results of my experiment are that the higher the Sun Protection
Factor (SPF) rating on sun block lotion, the greater the protection
it provides.
Conclusion:
By doing this experiment, I learned that my hypothesis was correct.
You should use sun blocks with higher SPF ratings. I also learned
about sun blocks and what they do to protect my skin from the harmful
rays of the sun.
