Floating or Sinking

Floating or Sinking

A fun tool to introduce the concept of buoyancy!

OpenNo account needed.
Floating or Sinking

8,000 schools use Gynzy

92,000 teachers use Gynzy

1,600,000 students use Gynzy


Discover which objects float and which objects sink in a tank of water.


At the top you see a bar which contains a variety of different objects. Scroll through the objects using the arrows on the sides of the bar.

Click or drag the object to drop the object in the water. The object will either float on top of the water or sink to the bottom of the tank. You can add as many objects to the water as you like.

At the bottom right, there is a “reset”-button. Use this to remove all objects from the tub and start again. At the top left there is a sound-button. Use this to turn the audio of this tool on or off.

The online teaching platform for interactive whiteboards and displays in schools

  • Save time building lessons

  • Manage the classroom more efficiently

  • Increase student engagement

About Gynzy

Gynzy is an online teaching platform for interactive whiteboards and displays in schools.

With a focus on elementary education, Gynzy’s Whiteboard, digital tools, and activities make it easy for teachers to save time building lessons, increase student engagement, and make classroom management more efficient.

Go to Homepage

Get started with Gynzy