MTTC 103 Elementary Practice Exam 2025 – Complete Study Guide

Holding a rubber band before releasing it best illustrates the concept of kinetic and potential energy because it involves the storage and transformation of energy. When the rubber band is held in a stretched position, it has potential energy due to its position and the tension created within it. This stored potential energy is converted into kinetic energy when the rubber band is released, causing it to move quickly. This clear transition between potential and kinetic energy effectively demonstrates how energy can change forms, which is a fundamental concept in physics.

In contrast, rolling a marble down a ramp also showcases kinetic and potential energy; however, it may not emphasize the process of energy transformation as vividly as the action of holding and releasing the rubber band. Drawing pictures of energy sources or reading about energy forms, while educational, do not involve direct physical examples or the dynamic interaction of energy types, making them less relevant for illustrating the concepts in question.