Craft a vortex generator from a large plastic bucket. Shoot a “cannonball” of air up to 100 feet. No target is safe from the Master Blaster!
What's a Whelmer?
A Whelmer is a captivating hands-on science activity from the collection of Wizard IV. For nearly 200 years, whelmers have been performed around the world by people interested in learning and teaching science.