Do Now Copy the following terms to assist with lab today: Archimedes’ Principle: the buoyant force on a submerged object is equal to the weight of the fluid that is displaced by the object. Bernoulli’s Principle: as the velocity of a fluid increases, the pressure exerted by that fluid decreases. Pascal’s Principle: Pressure applied to an enclosed fluid is transmitted undiminished to every part of the fluid, as well as to the walls of the container. Physical Science SWBAT describe the three principles of fluids.

Demonstrating: Archimedes Principle Procedure: 1.Obtain materials a. Cartesian Diver Bottle i. ketchup packet ii. water bottle 2. Take the bottle and add pressure to it by squeezing 3. The diver should sink to the bottom 4. try different amounts of pressure to see the speed of the diver ** This is how submarines sink, they increase pressure and take away air pockets**

Demonstrating: Bernoulli’s Principle Procedure (2 Parts): Part 1 1. Obtain materials a. Strip of paper b. Lighter c. Straw 2. Take the strip of paper and put it in front of your mouth 3. Blow over the top of the paper 4. Record what you observe happening to the paper! Part 2 5. Put the straw in your mouth and get ready to blow through it 6. Light it and blow through the straw keeping it to the side of the flame (DO NOT BURN THE STRAW) 7. You just demonstrated Bernoulli’s Principle! a. Evenly spread pressure in all directions

Demonstrating: Pascal’s Principle Procedure: 1. Obtain materials a. Raw Egg b. Plastic Bag 2. Place egg into plastic bag 3. Put the egg in the plastic bag in the palm of your hand 4. EVENLY with your four fingers (NOT your thumb) squeeze the egg 5. Squeeze it harder and try to break the egg! 6. You just demonstrated Pascal’s Principle! a. Evenly spread pressure in all directions Warning: Please, do not break these eggs! Follow the instructions carefully.