Table 1. Object used in Observations on the Observation on the movement the center movement of the object of other objects replacing the "marble" when rolled marble when rolled Heavy stone Lighter stone Guide questions: Write your answers on your answer sheet. 1. How do the speed and angle of the marble rolled on the cloth affect the path and movement of the rolling marble? 2. What have you observed to the movement of the marble rolled when the heavy stone is replaced? 3. What have you observed to the movement of the objects replacing the marble when rolled? 4. How does the tablecloth activity demonstrate the effect of gravity on the movement of objects?​