← All challenges

Floating Egg

Build it⏱ 5 minutesAges 4-10

Salt makes water heavier, so it pushes the egg up. That is why swimming in the ocean is easier.

Let's do it ↓

Grab this

  • 1 raw egg
  • A tall glass of water
  • Salt
  • A spoon
Supplies for Floating Egg

Do it in 3 steps

Floating Egg step 1
1

Gently put the egg in plain water. It sinks.

Floating Egg step 2
2

Take it out and stir in lots of salt.

3

Put the egg back in. It floats.

DO IT WITH ME

Your turn! Beat the clock.

Press start, then put the screen down and build. We'll cheer when time is up.

5:00

⭐ Bonus round

Can you make the egg float in the middle?

🧠 Why it works

Salt makes water heavier, so it pushes the egg up. That is why swimming in the ocean is easier.

A grown up should be nearby for every challenge. Clean up together when you are done.

Did you do it?

More build it challenges