Equipment: A pail of water. What it does: The pail is swung in a full circle and the water does not fall out when the pail is upside down. Concepts Demonstrated: Forces in circular motion. You may use ...

Above: The Hachiman 1.3 gallon Watering Can , $55, has a wide, divided spout for a gentle, “sprinkler-like flow and superior control.” Above: Hachiman buckets come in three sizes and many ...