Archimedes_Principle_and_Buoyancy_Lesson.pptx

Archimedes_Principle_and_Buoyancy_Lesson.pptx

• 1.
  Archimedes' Principle &Buoyancy • Grade 11/General Science • Ready-to-edit lesson
• 2.
  Learning Objectives • •Explain Archimedes' Principle • • Define buoyancy • • Predict floating/sinking • • Solve simple problems
• 3.
  Engage • Why dohuge ships float while a coin sinks?
• 4.
  Archimedes • Greek mathematicianwho discovered the principle.
• 5.
  Archimedes' Principle • Anobject immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.
• 6.
  Buoyant Force • Actsupward and opposes gravity.
• 7.
  Forces on anObject • Weight downward; buoyant force upward.
• 8.
  Floating, Sinking, Suspended •Compare the three cases.
• 9.
  Density and Buoyancy •Objects less dense than the fluid float.
• 10.
  Formula • Buoyant Force= Weight of Displaced Fluid • Fb = ρgV
• 11.
  Examples • Ships, submarines,hot-air balloons, life jackets.
• 12.
  Demonstration • Place objectsin water and observe.
• 13.
  Lab Activity • Testwood, coin, plastic, sponge.
• 14.
  Data Table • Object| Prediction | Observation | Float/Sink
• 15.
  Sample Problem • Findbuoyant force from displaced water.
• 16.
  Practice • 3 shortcomputation questions.
• 17.
  Safety • Handle watercarefully; wipe spills.
• 18.
  Summary • Review keyconcepts.
• 19.
  Quiz • 5 multiple-choicequestions.
• 20.
  Answer Key • 1-B2-C 3-A 4-D 5-B