(Question)
Answer the question below:   John was analyzing some of the results from his sunscreen study. He found that a lower SPF protects the skin Shorter or Longer?    Assuming that:  A sunscreen with a higher SPF value protects the skin longer.
(Answer)
Shorter


(Question)
Answer the question below:   If Jim has a container of hydrogen gas that is 40 liters in volume and he moves the gas to a container that is 50 liters in volume, what happens to the density of the gas increases or decreases?    Assuming that:  In the larger container we will still have the same number of gas particles, but now they are filling a much larger space.
(Answer)
decreases


(Question)
Answer the question below:   A main sequence star that is very bright is not among the hottest or coolest stars?    Assuming that:  The hotter a main sequence star is, the brighter it is.
(Answer)
coolest