Buoyancy

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  • Buoyancy
  • Density

Topics

  • Buoyancy
  • Density

Description

When will objects float and when will they sink? Learn how buoyancy works with blocks. Arrows show the applied forces, and you can modify the properties of the blocks and the fluid.

Sample Learning Goals

  • Predict whether an object will sink or float when placed in a liquid, given densities of the object and liquid
  • Apply the definition of density to both liquids and solids
  • Relate the buoyant force on an object to the weight of liquid it displaces
  • Describe how the buoyant force is related to an object's relative density to the fluid
  • Predict the weight of a completely or partially submerged object of known mass and volume
  • Describe the forces that act on a completely or partially submerged object
  • Explain how an object that is more dense than water can be kept afloat by placing it on an object that is less dense than water
Version 1.05

Teacher Tips

Download teacher tips PDF Overview of sim controls, model simplifications, and insights into student thinking ( PDF ).

Teacher-Submitted Activities

Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein HS
UG-Intro
Demo
HW
Lab
Physics
Buoyancy: How Does Buoyant Force Act on Objects in a Fluid? A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. This contribution was designed by PhET. Trish Loeblein HS
UG-Intro
Lab Earth Science
Chemistry
Physics
Alignment of PhET sims with NGSS This contribution was designed by PhET. Trish Loeblein updated by Diana López HS
MS
Other Biology
Chemistry
Physics
Earth Science
How do PhET simulations fit in my middle school program? This contribution was designed by PhET. Sarah Borenstein MS Other Chemistry
Biology
Earth Science
Physics
Mapping of PhET and IBDP Physics Jaya Ramchandani HS Other Physics
MS and HS TEK to Sim Alignment Elyse Zimmer MS
HS
Other Biology
Chemistry
Physics
Buoyancy Lesson Molly Hagan K-5 Guided Physics
Buoyancy and Density Jared Schmidt HS
MS
Lab Physics
Pool Cubes 2 - Buoyancy Dean Baird, Paul G. Hewitt HS
UG-Intro
Lab Physics
Fluids Lab Travis Brown HS Lab Physics
Buoyancy Lab Jeremy Wegner HS
MS
HW
Lab
Zinken, zweven of drijven. Loran de HS Lab Physics
Flottabilité et principe d'Archimède Takam Djambong HS
MS
Guided Physics
Perchè i corpi galleggiano Rosangela Mapelli HS Lab
Guided
Physics
Densidade e Empuxo no "Buoyancy" Artur Araújo Cavalcante e Gilvandenys Leite Sales HS
Other
Other
HW
Guided
Earth Science
Physics
Other
Fuerza de Empuje, Densidad de Objetos y Fluidos Elvis Rivera MS
HS
Lab
Demo
Physics
Principio de Arquimedes daniel cruz ochoa MS Lab Physics

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Design Team Third-party Libraries Thanks To
  • Wendy Adams
  • Kelly Lancaster (lead)
  • Trish Loeblein
  • Chris Malley
  • Jonathan Olson (developer)
  • Archie Paulson
  • Kathy Perkins
  • Noah Podolefsky (interviewer)
  • Sam Reid (developer)
  • Carl Wieman
  • Away3D
  • Box2D