Definitions of Important WordsDefinitions of Important Words

• Buoyancy: the power to float or rise in a fluid; relative lightness

• Relative Density: the weight per unit of volume of an object

• Fluid: any liquid or gas

Eureka!• Archimedes, a Greek mathematician, supposedly

discovered this law while climbing into his bathtub, and water was displaced

• According to his principle:– Displaced fluid = volume of object– Weight of displaced fluid = upward force on the object– If an object’s relative density < relative density of the

fluid, it will float– If an object’s relative density > relative density of the

fluid, it will sink

• B = pVg– Buoyancy (force) = density of liquid * volume *

acceleration of gravity• This can be simplified as buoyancy = weight

Works Cited

• http://www.infoplease.com/ce6/sci/A0804583.html

Bernoulli’s Principle

-Group Two

•Adam, Rohan, Alyssa, and Ronnie

What is Bernoulli’s Principle?

• Bernoulli’s Principle states that as the velocity of a fluid increases, the pressure exerted by that fluid decreases

Real-world applications of Bernoulli’s principle

• Bernoulli’s principle plays an important role in the takeoff and flight of airplanes. – This is because when the air (which is a fluid) goes

under the wing, it travels faster than the air above the wing and therefore a thrust is created by the decrease in pressure due to Bernoulli’s principle.

• A good example of this is the airfoil. This is the type of wing used for commercial planes. It came from a study of Bernoulli’s principle

• It also helps to keep the back wheels of racecars down when they travel at high speeds.

Visual

Works Cited

• "Bernoulli's Principle." Wikipedia. Wikimedia Foundation. 25 Mar. 2009 <en.wikipedia.org/wiki/Bernoulli's_principle>.

• "Bernoulli's Principle." Thinkquest.com. 25 Mar. 2009 <http://library.thinkquest.org/27948/bernoulli.html>.

• Martin, Richard A. "Bernoulli's principle." World Book Advanced. 2009. [Place of access.] 25 March 2009 <http://www.worldbookonline.com/advanced/article?id=ar056940>.

• X-zyLo. "Aerodynamic and Gyroscopic Principles." Hi Fly Kites. X-zyLo. 24 Mar. 2009 <http://www.hiflykites.co.za/kite-online-shop/fun-flying-toys-x-zylo-flying.htm>.

By: Tanya Akl, Zach Ginis, Alye Miller, and Tony Zhu

This is Blaise Pascal

Pascal’s Law

• If pressure is applied to confined fluids, the fluid will send out the same pressure at the same rate.

•P=F/A•Examples

Hydraulic PressSqueezing a Toothpaste Tube

Used for the force of the driver’s foot in the breaks of most automobiles

History

• Born on June 19, 1623 in Clermont, France.

• Died August 19, 1662• He was a mathematician and a

philosopher.• Contributed to the study of fluids

Boyle’s LawBoyle’s Law

By Thomas Yi, Katie Uhl, Lindsey Jackson, Aditya Nair, and Raghav

Sharma

pv pv

=k=k

What is Boyle’s Law?What is Boyle’s Law?

Boyle’s Law (also known as the Boyle’s Mariotte Law) is a gas law in the case of the “Ideal Gas Law”. Named after Robert Boyle, Boyle’s Law describes the inverse relationship between the absolute pressure and volume of a gas.

History of Boyle’s LawHistory of Boyle’s Law

• Robert Boyle (1627-1691) was a natural philosopher from Ireland. The relationship between pressure and volume was discovered by two of Boyle’s friends, and Boyle performed experiments to confirm this. Also credited for first saying “Why so serious?” when Galileo was being persecuted by the Church.

• Edme Mariotte, a French physicist, also discovered this relationship independently from Boyle. Therefore, the law is sometimes referred to as Boyle-Mariotte or Mariotte’s law.

Xamples

• Air-mattresses

• Boyle’s law leads to Charles’ law

• Air Bubbles get bigger as they increase in “altitude” in the water

How Boyle’s Law WorksHow Boyle’s Law Works

At a constant temperature, the pressure and volume of gas is inversely proportional.

Works Cited

http://en.wikipedia.org/wiki/Boyle's_law

Special Thanks to:Special Thanks to:

• Achmed the Dead Terrorist

“stop touching me”• Our Noodlyness, The one and only Flying

Spaghetti Monster• Charles Darwin, for giving us the theory that

explains how we got here• Uncyclopedia• King Leonidas.• The Joker (from The Dark Knight)

• Wikipedia

• NASA.gov

• www.library.thinkquest.org

• www.iun.edu (Indiana University)