Final answer:
The author builds understanding of marble racing through explanations, experiments, and comparisons of different marbles.
Step-by-step explanation:
The author builds understanding of marble racing by explaining the concept through various examples and experiments. For example, the author describes how to perform a take-home experiment using a bowl or basin shaped like a hemisphere to demonstrate simple harmonic motion (SHM) of a marble. The author also discusses the relationship between velocity, distance, and kinetic and potential energy of the marble.
In addition, the author compares the behavior of glass and steel marbles in experiments, exploring whether the velocity and distance moved by the marbles are proportional to their mass. This allows the reader to gain a deeper understanding of the factors that influence marble racing.
Overall, through clear explanations and hands-on experiments, the author helps readers grasp the concepts and principles behind marble racing.