Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436
Email flinn@flinnsci.com
firewatch

A paper towel is soaked in lighter fluid and ignited, producing a 15–20 cm high flame. When this is placed on a screened-in Lazy Susan, and slowly spun, the flame is spontaneously transformed into a roaring meter-high pillar of fire. In the second demonstration, students are invited to participate in a race—who can empty their jug of water the fastest? They soon find out that gravity is not the only force that can help them! Two seemingly unrelated activities—or are they?

Concepts

  • Pressure
  • Combustion
  • Forces
  • Density
  • Mass
  • Volume