Grade_11_General_Science_The_Physics_of_Fluids.pptx

Grade_11_General_Science_The_Physics_of_Fluids.pptx

• 1.
  The Physics ofFluids
• 2.
  Learning Objectives • •Explain how hydraulic systems use fluid principles. • • Identify applications of Pascal's and Archimedes' principles. • • Design simple activities/models showing effects of pressure, force, area, density, and buoyancy.
• 3.
  What is aFluid? • A fluid is any substance that flows and takes the shape of its container. • Examples: water, oil, air.
• 4.
  Properties of Fluids •• Density • • Pressure • • Viscosity • • Buoyancy
• 5.
  Fluid Pressure • Pressure= Force/Area • Fluid pressure increases with depth and density.
• 6.
  Pascal's Principle • Pressureapplied to an enclosed fluid is transmitted equally in all directions. • Applications: hydraulic jack, brakes, lifts.
• 7.
  Hydraulic Systems • Smallinput force can produce a larger output force using different piston areas.
• 8.
  Simple and CompoundMachines • Hydraulic systems improve machine efficiency in jacks, presses, excavators, and lifts.
• 9.
  Archimedes' Principle • Buoyantforce equals the weight of the displaced fluid. • Explains floating and sinking.
• 10.
  Applications • Home: syringe •Community: water towers • Business: hydraulic press • Transportation: ships, submarines, aircraft brakes
• 11.
  Investigation Activity • Builda simple hydraulic lift using two syringes and tubing. • Investigate how piston size affects lifting force.
• 12.
  Group Design Challenge •Design a model demonstrating effects of pressure or buoyancy. • Present observations and explanation.
• 13.
  Assessment • 1. Whydo ships float? • 2. How do hydraulic brakes work? • 3. How does depth affect pressure?
• 14.
  Summary • • Fluidsflow. • • Pressure depends on force, area, depth. • • Pascal: pressure transmission. • • Archimedes: buoyancy.
• 15.
  References • DepEd MATATAGGeneral Science • OpenStax College Physics • Halliday, Resnick & Walker