Athletic Training Practice Exam

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Prepare for the Athletic Training Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What does an SPF of 5 indicate about sunscreen?

Protection from sun 105%
Five times longer exposure without burning
Cream contains 5% of SPF
Number of applications needed for complete protection

The correct answer is: Five times longer exposure without burning

An SPF of 5 indicates that the sunscreen allows an individual to stay in the sun five times longer without burning compared to wearing no sunscreen at all. This means that if a person typically starts to burn after 10 minutes of sun exposure without protection, applying SPF 5 sunscreen could theoretically provide around 50 minutes of protection under the same conditions. It's important to understand that SPF, or Sun Protection Factor, measures the effectiveness of sunscreen in blocking ultraviolet (UV) rays, specifically UVB rays, which are primarily responsible for sunburn. The SPF number is a straightforward way to quantify the amount of added protection that sunscreen can provide against the risk of burning. The other options provided do not accurately reflect the meaning of SPF. The first option, regarding exceeding 100% protection, is misleading since SPF cannot surpass a theoretical maximum protection level. The third option incorrectly suggests that the SPF designation represents the percentage of the product that is active sunscreen ingredient, which is not how SPF values are defined. Finally, the choice about the number of applications needed for complete protection does not relate to SPF at all but rather to the overall strategy for sunscreen use.