What is building inside?

• The tablet begins reacting with the water almost immediately.

• Tiny bubbles form throughout the liquid. These bubbles are carbon dioxide gas.

At first, there aren’t enough bubbles to do much.

But something is changing every second.

Why doesn’t it launch immediately?

The lid holds the canister closed.

As more gas is produced, it becomes trapped inside.

The pressure slowly increases.

Eventually, the force pushing on the lid becomes stronger than the lid can hold.

Then the rocket launches.

Why does the rocket move upward?

When the lid suddenly releases, gas rushes downward out of the canister.

The canister moves in the opposite direction.

Scientists use the same idea to explain how rockets travel through space.

Curiosity Spark

NASA rockets burn thousands of kilograms of fuel every second.

If our tiny rocket works using pressure and escaping gas…

What do you think happens when a real rocket produces millions of times more gas?

Try These:

[Exploding Jellyfish] and [The Invisible Fire Extinguisher], j [Balloon Rocket Blast-Off]