The picture below shows the setup for an experiment involving a 1000 ml beaker, sitting on a bumer, filled with 500 ml of water, where
the bumer represents the Sun's energy, and the beaker of water represents Earth's oceans.
1000 L
500 m
Bumer
During the experiment, black pepper was added to the water as it boiled strongly, and the pepper moved in a circular pattern from the top
of the water to the bottom and back again. What does the circular pattern of the pepper represent?
