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  Earth Science
  Life Science
  Physical Science

Hands-on Activity

Sink or Float

Fun Forces
In this activity, students will investigate the densities of different fluids by observing whether hard-boiled eggs sink or float in two different fluids.
Topic: Density
Real World Science Topics:
  • An exploration of the densities of different liquids
  • An exploration of how objects float or sink in liquids of different densities
Students will gain an understanding of the densities of salt water and freshwater. They will also observe how density affects whether objects will sink or float in a liquid.

Activity Difficulty Rating: 4 Each hands-on science activity has been ranked based on difficulty of set up and how difficult they are to perform. The rating scale is from 1 to 5, with 1 being the easiest and 5 being the most complicated.



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