Materials
• Helium Strength
• Hex Nut
Procedure:
1. Place a hex nut in your balloon.
2. Blow up your balloon with your hex nut inside.
3. Tie the balloon.
4. Next, spin your balloon so that the hex but starts to move around and around. Experiment: What happens if you move the balloon faster? Slower?
5. Experiment with other items inside the balloon. Are they as loud? Do they make different noises?
Science:
• Everything exhibits the law of inertia. This basically means that if something is at rest, it will stay at rest unless something moves it. The reverse happens for something that's moving. If the object is moving, it will keep moving until it is forced to move. When you are in your car, do you ever notice that you sometimes lean to the right when the driver turns to the left? Your body will show the principle of inertia as it tends to keep going where the car was going until your chair and seatbelt push you along to the left. In the case of the hex nut, the force that slows it down is gravity and friction. You'll see that if you stop spinning the balloon, the nut should slow down and get lower until it stops.
• As the hex nut rolls around the balloon, the hex nut vibrates the balloon. The hex nut's shape cause the vibrations emitted. The vibration makes sound.
• Note: Friction is the force that resists the movement of two objects rubbing against each other. As the hex nut rolls across the inside of the balloon, the hex nut rubs the balloon. This can eventually wear out the balloon and cause the balloon to pop quite unexpectedly.
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