1. Archimedes Principle The buoyant force is equal to the weight of the displaced liquid This helped to later determine volume of an irregular shaped object http://www.bing.com/videos/search?q=bill+nye+archimedes+pri nciple&FORM=VIRE1#view=detail&mid=15E41E2FB552D8712770 15E41E2FB552D8712770

2. Archimedes Principle

4. Archimedes' Principle explains why steel ships float If the weight of the water displaced is less than the weight of the object, the object will sink Otherwise the object will float, with the weight of the water displaced equal to the weight of the object. http://www.science-niblets.org/physics/why-can-heavy-steel-ships-float.html