Density – sink or float
Integrated ScienceMatter & MaterialsAges 13–14
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Sign in to playDensity D = m/V decides whether an object sinks or floats in water. Choose a material or set your own mass and volume to see the block sink or float and read how far the water rises in a 100 L tank; compare four blocks with the same mass, the same volume or the same density; then measure the mass and volume of five mystery blocks and calculate D to identify each material. Based on the "Density" simulation by PhET Interactive Simulations, University of Colorado Boulder (CC BY 4.0); rewritten.
Lesson: Density
How to use
Parameters you can change
- Screen Intro, Compare, Mystery
- Material (Intro screen) Foam (150 kg/m³), Wood (800 kg/m³), Ice (920 kg/m³), Brick (2000 kg/m³), Aluminium (2700 kg/m³), Iron (7800 kg/m³), Custom
- Show reference density table (Mystery screen)
