Density · Predict · Test · Observe
Sink or Float Investigation
A whole water lab, without the water! Choose an object, make a prediction, then test it in the virtual tank.
1 Choose → 2 Predict → 3 Test → 4 Observe
Water surfaceTank bottom
Choose your prediction to unlock the test.
What if the foil boat fills with water?
An open boat holds air. Flood this same boat to see what changes.
My investigation notebook
0 of 8 objects tested
| Object | My prediction | Result |
|---|
⭐ All eight tests complete! Look for a pattern, then try the cube challenge below.
This is a model with specific sample objects. Real plastics, rubbers, rocks, and woods vary. Shape and trapped air can change results. Your notebook lasts until this page is closed or refreshed.
Same size · Different mass
The density cube challenge
These solid cubes have the same volume. Which cube has more mass and is more dense?
20 g
Wood cubeMetal cube