Nothing too fancy, something we could do at home. For a science project so keep it simple. :)
Too dangerous, your teacher would not allow it, and neither would your parents. And request for information on explosives will get you kicked off this service. .
When a corn silo blows up, it's because of a dust explosion. In a dust explosion, there is a very large volume of air surrounding a small volume of fine particles and an ignition source. Take a coffee can with a plastic lid. Cut a small hole in one side near the bottom. Attach a piece of rubber hose so that it sticks into the can a small amount aimed down to the centre of the can. Put a 1/4 cup of talcum powder in the can. Put a small candle in there too. Light the candle. Snap the plastic lid in place. Blow hard into the rubber hose and watch the results. CAUTION: Don't get too close to the can until you have tried it a couple of times to see how it works and do all your experimenting outside. When you see the lid go flying off for the first time, try to imagine what kind of force is released in a silo explosion.
