1. Topic: Archimedes Principle PSSA: 3.4.7.C / S8.C.3.1

2. Objective: TLW state and explain Archimedes Principle TLW state and explain Archimedes Principle

3. MI #1: Buoyancy and Archimedes Principle Buoyant force is the upward force that fluids exert on all matter. Buoyant force is the upward force that fluids exert on all matter. Archimedes Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. Archimedes Principle states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. –Object Weight > Fluid Weight = Sink –Object Weight < Fluid Weight = Float

4. MI #2: Density and Buoyancy Density is the mass per unit volume of a substance. Density is the mass per unit volume of a substance. –Object Density > Fluid Density = Sink –Object Density < Fluid Density = Float –Density = Mass/Volume –Sometimes it is possible to change the density of an object by changing its shape.

5. MI #3: Examples Boats and Submarines Boats and Submarines Bony Fishes Bony Fishes Hot Air Balloons Hot Air Balloons

6. So What…? Real Life Application Archimedes Principle explains why objects float and sink. Archimedes Principle explains why objects float and sink.