Gabrielle and her friend William had nine identical long, rectangular containers. Gabrielle added water to the containers, filling three to a depth of one-half inch, three to a depth of one inch, and three to a depth of two inches. She lifted the end of one container to a height of three inches, let the water settle, and then quickly set the container back down. This motion created a wave. Using a stopwatch, William timed how long it took the wave to travel across the container and back one time. Gabrielle and William repeated this process with all nine containers. Identity the question that Gabrielle and William's experiment can best answer. Are the heights of waves in containers affected by the depth of water in the containers? Does container shape affect the amount of time it takes waves to travel through water in containers? Does water depth affect the amount of time it takes waves to travel through water in containers?