Simple Friction Experiment for Kids - Rolling Balls on Different Surfaces #3725676 (License: Personal Use)

The illustration shows two students conducting a controlled physics experiment: one rolls a blue ball on a smooth gray surface (carpet), while the other rolls a red ball on a textured green surface (grass). In the bottom panel, they use a measuring tape to compare how far each ball traveled, demonstrating how surface friction influences motion.

Used in elementary science curricula, educational blogs, or STEM activity websites to visually explain friction and experimental design; matches user intent for classroom-ready, low-cost science demos.