How does the quantity of zinc used in a mineral-based sunscreen affect an individual's chance of getting a sunburn?

Which statement forms the best testable hypothesis for the question?

1) If spray-based sunscreens require less time to apply and dry because they include less zinc, then individuals who use spray-based sunscreens will have a reduced chance of getting a sunburn.

2) If the quantity of zinc in a mineral-based sunscreen affects the total amount of UVA and UVB rays absorbed, then increasing the amount of zinc will decrease an individual's chance of getting a sunburn.

3) if mineral-based sunscreens are thick and opaque when applied due to more zinc, then they will decrease an individual's chance of getting a sunburn.

4) if mineral-based sunscreens contain more zinc in them, then individuals who use them will decrease their chances of getting a sunburn.

Question

Cannon Livingston

7 October, 07:44

+5

Answers (1)

Know the Answer?

Kara Shah · Answer 1

The statement that forms the best testable hypothesis for this question, would be 2. I believe.