Raw vs Hard-Boiled Egg Spin

The raw egg starts moving again; the cooked egg stays stopped. Ask students to predict what will happen. Spin both, stop each briefly with a finger, then release. Key idea: Liquid inside the raw egg keeps moving after the shell is stopped. Ask: What is still moving inside the raw egg? Safety and cleanup: Use trays; wash hands after handling raw egg. https://www.google.com/search?q=%22Raw%20vs%20Hard-Boiled%20Egg%20Spin%22%20science%20demonstration%20experiment