Experimonkey Logo
Vote now in the special December holiday donation poll

Sink Or Swim?

Use your knowledge of density and buoyancy to cause an egg to float.

Sink Or Swim? Experiment

Materials Checklist

Sink Or Swim? Experiment

Questions and Things to Notice

Learn about fluid density and buoyancy in this quick and easy experiment.


  1. Sink Or Swim? Experiment Step 1

    Step 1

    Carefully place the egg into the drinking glass and fill with water until the egg is fully covered and the glass is about 3/4 full. Observe what happens to the egg: is it standing up? lying sideways?

  2. Sink Or Swim? Experiment Step 2

    Step 2

    Add a few large spoonfuls of salt into the glass and stir until all of it dissolves. If you like, you can take the egg out of the glass to make it easier to stir.

  3. Sink Or Swim? Experiment Step 3

    Step 3

    Continue adding and dissolving salt into the water until the egg begins to float. At this point, the saltwater solution we've made is actually more dense than the egg. And so, like oil floating on top of water, the egg floats too!

You must be logged in to comment.

On 23 October 2020, Anonymous Primate said,
Fixing to try it
On 10 July 2020, Anonymous Primate said,
That is awsome

Materials Checklist