Rachel+M

Rachel M. 2011-2012
 * WATER ROCKET AND DRY ICE SUBLIMATION **

This experiment was conducted to determine how much dry ice will be able to sublimate in the time that it takes a water rocket to launch, and then be recovered. It was hypothesized that amount 2.3 grams of dry ice would be able to sublimate in the time that it took the water rocket to launch and then be recovered.
 * ABSTRACT **

2.3 grams of dry ice were measured and then 0.5 liters of water were measured. They were both put into the water rocket. Then the air pump was pumped 27 times into the water rocket, it was launched and recovered. This was done two more times with 2.5 grams and 2.8 grams of dry ice, with the same amount of water and same number of pumps. After the first launch, of 2.3 grams of dry ice put in the rocket, the dry ice was completely gone. The same was true with the last two amounts of dry ice tested, 2.5 grams and 2.8 grams of dry ice.

Things that could improve this experiment include not letting the dry ice come out of the water rocket. Next time that this experiment is performed the rocket should have a small compartment for the dry ice to stay in. This small compartment should also contain water. Another improvement would be to do the same amount of dry ice a couple of times to make sure the results are similar.
 * EXPERIMENTAL IMPROVMENTS AND FUTURE EXPERIMENTS **

Future experimental possibilities include seeing if warm or cold water have an effect on the dry ice that can sublimate in the time that it takes the water rocket to launch and then recover. Also this experiment could have other testing possibilities such as having a fixed amount of water in a water rocket then see how long it will stay in the air after a launch. Then add dry ice to the water in the rocket and see if the time in the air changes. This should be done a few times to make sure that the results are similar.

