Rocket Science

What you need:Rocket Science
•  Unused tea bag ( We tried the black tea bag and the green tea bags, for some reason only the black tea worked for us).
• Lighter

What you do:
• Empty the tea bag of its contents. (Just take out the staple, and unfold it.)
• Open it up so that it will stand upright, as a cylinder.
• Light the top of it on fire with the lighter.
• Wait and watch.

 “Everyone knows that hot air rises and this experiment demonstrates that idea as well as the principles of convection currents. As the tea bag burns, hot air is being created, as well as a thermal, or convection current, under the bag. When the tea bag burns down into a small enough ball of ashes, the convection current causes it shoot up in the air.” 
[Quoted directly from Steve Spangler Science.]