Today, we got out the goggles and created our own ROCKETS!!!! We took film canisters and filled them with clear soda and Alka-Seltzer tablets. We popped the tops back on the canisters real fast and shook up the mixture. We threw the canisters in the air and they exploded right before our eyes! We tried it again, but put the canisters on the ground this time. We watched to see how far up in the air they would shoot and they went really high! We found out that the CO2 in the soda and the Alka-Seltzer cause a lot of pressure to build up in the canister. Because of this, it pushes the top off rapidly, causing it to pop and fly up into the air.
