This balloon rocket science activity demonstrates Newton's Third Law of Motion in action. Newton's Third Law states that for every action, there is an equal and opposite reaction. In our balloon rocket activity, this principle can be seen when the air inside the balloon is released, causing the rocket to move in the opposite direction. When you inflate a balloon and then let it go without tying the end, the air inside the balloon rushes out. As the air is pushed out of the balloon (the action), it exerts an equal and opposite force on the balloon itself (the reaction). This force propels the balloon in the opposite direction of the escaping air, causing the balloon to move forward like a rocket. This balloon rocket science experiment is one of my favorite examples of Newton's Third Law in action! It demonstrates how the force of the air escaping from the balloon results in an equal and opposite force that propels the balloon forward. This hands-on activity can help children better understand the concept of action and reaction in a fun and engaging way.