Get some liquid Nitrogen and freeze stuff!

Drop some marbles on the floor and watch them explode, make air filled balloons shrink to nothing then rebound afterwords and then when your audience is amazed freeze some strawberries and feed them!

Science, entertainment and cold refreshing deserts is a powerful trio.

This is a nice one: You will need to be careful and have enough safety precautions, as well as some understanding of electrics.

A coil gun, which consists of a barrel, a coil wrapped around it, and some capacitors. The capacitors get charged, you put a ferro-magnetic object in the barrel, flick the switch and by Lorentz-force the projectile propels out of the barrel :).

Movie if you do it the pro way:




Be sure to have someone with knowledge of electronics around, if you get jolted from a 400V 400uF cap you can die.

What are you trying to prove?

That no matter the height it falls?

you'd have to come up with your own theories

get some fully grown redwoods and make a ballista and see how far u can shoot urself with it

O_O

You could create pictures using different sizes of magnets and a lot of iron filings. We did something similar in my physics class earlier this year.

That sounds very simple and fun lol
ima try that tomorrow

The theory of gravity
amazing....

na u gotta make an entirely ceramic engine huge helecopter and attach one of those junkyard crane electromagnet things on it and turn it on and fly over some empty houses and see how many nails u can get to come out of their roof