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Water B Gone

CSEF · 2013 Aerodynamics/ Hydrodynamics (Junior Division Only)

Stephany R. Brundage · Willits Charter School, Willits, Mendocino County

Overview

Objectives/Goals My project objective was to figure out which way you could empty a bowl in the most effective way by spraying water into the bowl. (For example, you can spray water into a whirlpool.) Methods/Materials 3 bowls (sm, med, lg) were one at a time filled and sprayed into, according to methods 1-5, to empty the most water out of them within a 1 minute period. A tape measure was used to measure the amount of water left, and a thermometer was used to measure the temp of the water. Results Method 1, Whirlpool, (at water surface) emptied the most water out of the bowl, and Method 2 (sprayed directly down on the water at 2# above the water surface) emptied the least amount of water. Conclusions/Discussion My conclusion is that whirlpools are the best and the most efficient way to empty water from a bowl, and spraying directly down on the water surface, breaking the meniscus is the least efficient way.

Summary statement

My project was about emptying a bowl by spraying more water into it in different ways in one minute periods.

Help received

Brother and Teacher corrected board. Mother did the photography.

Competition history

  • CSEF 2013 Aerodynamics/ Hydrodynamics (Junior Division Only) · Entry J0106

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