Question

the passage below describes an experiment.
gary collected two tall and narrow glasses, two average - sized glasses, and two short and wide glasses. after pouring a cup of water into each glass, he left them at room temperature for three days. then, he measured the volume of water that remained in each glass.
a variety of bottles and glasses
identify the question that the experiment can best answer.
does the width of a glass affect how much water evaporates from it over three days?
does waters temperature affect how much of it evaporates over three days?

Explanation:

The experiment involves different - sized glasses (varying in width as well as height). All glasses have water at room temperature (so temperature is kept constant). The variable being tested is the type of glass (which affects the surface area related to width etc.). Since temperature is controlled (left at room temperature for all), the question about temperature affecting evaporation is not relevant. The setup with different - shaped glasses (differing in width among other things) makes the question about the width of the glass affecting evaporation valid.

Answer:

Does the width of a glass affect how much water evaporates from it over three days?