Teach a variety of physical science concepts with the simplest steam engine. Add water to the flask, insert the rubber stopper with exhaust arms, and hang it securely. Then heat the water with a Bunsen burner, and watch the engine spin! Illustrates important physical principles, such as phase changes, pressure, conservation of momentum and Newton’s third law of motion. This demonstration is a real crowd-pleaser. Includes a reproducible student worksheet and complete instructions.
Concepts: Newton’s third law of motion, conservation of energy, phase changes, rocket propulsion, steam engine. Time Required: 15 minutes Materials Provided: Erlenmeyer flask with hanger, rubber stopper with exhaust pipes, vinyl end caps.