When you stir a cup of tea with leaves at the bottom then when you stop stirring the leaves go to the center. I always thought that the cause was the centrifugal force and since the leaves where lighter than the water the water was pushed out and the leaves sucked in. But I just read in SA that the cause was the coriolis force. Can someone explain how the coriolis force is responsible and what's wrong with my explaination? Thanks.