The Bernoulli Effect By: Hannah arner.

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Presentation transcript:

The Bernoulli Effect By: Hannah arner

History of the Bernoulli Effect In 1738, a brilliant mathematician by the name of Daniel Bernoulli came up with a theory. His ideas have been named Bernoulli’s principle, the Bernoulli effect, and Bernoulli’s law. Daniel Bernoulli published the book Hydrodynamica, where he presented his theory.

The Bernoulli Principle…what is it? Officially, Bernoulli’s Principle is a statement of relationship between flow speed and pressure in a fluid system Bernoulli's principle states that fluids in an area moving faster than the surrounding area possess less pressure. Faster- moving fluid  lower pressure than the rest of its surroundings. **Important note** Fluids include liquids and gasses. Air is a gas and as such is classified as a fluid.

Clicker Question! 1. When talking about Bernoulli’s Principle, the term fluids (or fluid system) refers to… A) Liquids only B) Gases only C) Liquids and Gases D) Liquids and Solids

The Bernoulli Effect in the Real World Bernoulli’s principle helps explain that an aircraft can achieve lift because of the shape of its wings. They are shaped so that that air flows faster over the top of the wing and slower underneath. Fast moving air equals low air pressure while slow moving air equals high air pressure. The high air pressure underneath the wings will therefore push the aircraft up through the lower air pressure.

Clicker Question! 2. Airplanes are a good example of a real world application of the Bernoulli Effect. What lifts the wings of the airplane upwards? A) Turbo rockets B) High air pressure beneath the wings paired with low air pressure above them C) Wind D) Low air pressure beneath the wings paired with high air pressure above them

Ping Pong Ball Demonstration!!!!!!

References/Citations Franklin, W. S. (1911), BERNOULLI'S PRINCIPLE. School Science and Mathematics, 11: 7–14. doi: 10.1111/j.1949-8594.1911.tb03255.x http://www.wisegeek.org/what-is-the-bernoulli-effect.htm http://www.sciencekids.co.nz/lessonplans/flight/flightintroduction.h tml