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Understanding Buoyancy and Density in Floating and Sinking Phenomena

Learn about density, buoyancy, and Archimedes' principle. Discover how objects float or sink based on their density relative to the surrounding fluid. Explore the concepts with examples of objects floating and sinking in different environments.

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Understanding Buoyancy and Density in Floating and Sinking Phenomena

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  1. Section 11-2 Floating and Sinking

  2. Density • Density is a measure of mass (matter) in a certain volume • Density = Mass Volume • Examples: • Objects with less density will float on objects with more density (i.e. wood in water) • Objects with more density will sink in objects with less density (i.e. rock in water)

  3. Buoyancy • The buoyant force acts in the opposite direction of gravity • Archimedes’ Principle • The buoyant force is equal to the weight of the fluid the object displaces (pushes out of the way) • Examples:

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