Bernoulli's Principle-Lift Water By Blowing (Enrique Hueyopa)
Author(s)
Enrique Hueyopa
Principles Illustrated
Bernoulli's Principle: as the velocity of a fluid increases, the pressure exerted by that fluid decreases
Standards
Physical Principles in Living Systems (Physical Sciences)
6. Physical principles underlie biological structures and functions. As a basis for understanding
this concept:
j. Students know that contractions of the heart generate blood pressure and that
heart valves prevent backflow of blood in the circulatory system.
Questioning Script
Prior knowledge & experience:
What happens when you blow on a straw?
Root question:
What will happen to the water when a stream of fast air is blown on top of the straw?
Target response:
The horizontal straw creates a stream of fast flowing air which creates a low pressure area above the straw placed in the water, this causes the water to rise.
Common Misconceptions:
The common misconception is that the only way to draw water with a straw is to suck on the straw.
Photographs and Movies
References
Liem, L., Tik. (1987). Invitations to Science Inquiry. Chino Hills, CA: Science Inquiry
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