Science Experiments

Posts Tagged ‘balloon’

Question: Science experiment… what if you put helium in a basketball?

What happens when you fill a basketball with helium? Will it bounce differently? Will it hold the helium? Is there a weight difference? Anything? Just curious.

Answer: 1. It will bounce the same if it’s filled to the same Pressure. The type of gas inside of the ball doesn’t change the way it bounces. Some say that it will make the ball bounce *less*, but this isn’t really proven in any significant manner, nor is it clear if it would actually make a difference that the average person would notice. They say that a heavier ball (air-filled) resists changes in speed more than a lighter ball (helium-filled). This means that a helium-filled ball might bounce a little lower and lose energy from the initial bounce faster than an air-filled ball. This isn’t so much a property of it having helium as a change in weight–a lighter ball material would cause the same effect.

2. It should be able to hold helium if it’s capable of holding air in.

3. There will be a weight difference. Helium is lighter than air. This doesn’t mean that the ball will float–you’re filling it to a higher Pressure than normal air. Also, the weight of the outside part of the ball will probably hold it down.

4. Mythbusters did these tests with a football. Overall, there was no significant difference in their data for how far the ball went or how fast it went. There were differences, but they didn’t have good enough data to really be sure. The only one that worked out to being sure was that the helium-ball was lighter than the air-ball.

“30 Seconds with Mr. G” – Number 15 – “Helium Arms”

Question: I have a mini motor from some type of mad science experiment and I want to make something out of it.?

I have old broken rc cars, plastic airplanes ,and some motors/ electrical junk. I want to make something out of it but I have no idea what I could make. Like a plane or car maybe a hovercraft thing. Anything not to complicated.

Answer: http://www.arvindguptatoys.com/toys.html

Hovercraft Science Project