8. Look straight down into the container and trace a line on the lid that represents where the water meets the potato. This is the shoreline.
Student Page 2-7.2a
9. Repeat steps 6, 7, and 8, adding one centi¬meter of water each time until the potato is submerged.
10. When you have finished, tape a white sheet of paper to the back of your lid to improve visibility. Then compare your results with the rest of the class.
How do you explain the differences in your results?