Conclusion

Michael's

This experiment, as all, must have a conclusion, and must answer several important questions including the purpose of the experiment, the major findings, and what data supported our hypothesis. Our hypothesis was that if you spun brine shrimp in a centrifuge to simulate 0 gravity, they would grow longer because they wouldn't have the weight of gravity to push them down. The purpose of this experiment was to find out whether this was true or not, and if it was, it would help brine shrimp hatcheries all over the world, because brine shrimp are hatched to feed fish in fish hatcheries. Our major findings were that the brine shrimp inside the centrifuge actually do grow larger, and that there was a higher percent hatching rate inside the centrifuge than outside. The data that supported our hypothesis was that when we measured the shrimp, the shrimp inside the centrifuge were between .7 and .8 millimeters, and the ones outside were between .45 and .55 millimeters. Other data that supported our hypothesis was that inside the centrifuge, there should be 1/4 the amount of brine shrimp than outside, because outside it was 4x the amount inside (inside: 15ml of water, outside: 60ml of water). Instead, inside the centrifuge, there was an average of 17 brine shrimp hatched, while outside there was an average of 2. Our findings compare with other reasearchers to be correct, and their hypothesis' are that any creature which has evolved for 1 g, when put in 0 g from a child, will grow much faster and become much higher than it would be on earth because the animal would have nothing holding it down, and therefore it would grow larger. There is one large explanation to why we got these results in our experiment. This explanation is that inside the centrifuge, it was around 30 degrees celsius, while outside itw as 25 degrees celsius. This is a major factor because the brine shrimp hatch faster with a higher temperature. However, our research points towards the fact that 25-30 degrees celsius is optimum brine shrimp hatching temperature, so many more brine shrimp should have hatched outside the centrifuge still. One large recommendation I have for improving our experiment is to make sure that the brine shrimp inside the centrifuge and outside the centrifuge have the exact same temperature. Our experiment now has a conclusion and a finishing, which explains everything from what our findings were to how it compares to those of other people.



Christine's If brine shrimp are grown at zero gravity, then they will grow longer (size wise), compared to the brine shrimp living at normal gravity, which is 1 gravity. During this expiriment, our hypothesis was proven correct. The amount of brine shrimp hatched in the controls compared to the IVs were very low. In the controls, the average amount of brine shrimp hatched were only 6.5, about 7 out of six controls. In the IVs, the average amount of brine shrimp that hatched were 15.5, or about 16 brine shrimp. If we used the data of the Ivs, 62 brine shrimp were supposed to hatch. Also, when we looked at the brine the brine shrimp under a microscope, we measured one of the brine shrimp we found of the IVS, which was 0.7 mm. the controls were measured 0.5 mm and 0.45 (we measured 2) in length. This data supports my hypothesis, proving it correct. A program calle GADGET conducts expiriments with gravity, temperature, etc. The Seth Paine Elementary School has conducted an expiriment of the effect of 0 gravity on brine shrimp, but no change was detected. Our expiriment, however, proves that our brine shrimp in the centrifuge (zero gravity) was effected, growing larger and in larger quantities. Although this may havae occured, we do have our sources of errors. Our source of error occurs in the variables and our perspective. One of the variables that we are having trouble with is the centrifuge. The centrifuge can only spin up to 30,000 RPMS, which is already too strong. This would kill the brine shrimp, if they were kept for the long time. Also, the centrifuge can only go on for 30 minutes. We've worked out a schedule, 10:50 am, 1:15 pm, 3:10 pm, 3:45 pm, and at 4:15 we get the results. This schedule, as you can see, does not go on for 24 hours a day. This may interfere with the switching of the 0 gravity to the gravity to the 0 gravity, etc. The other 2 variables are light and temperature. The control brine shrimp were moved to the windowsill because they weren't getting enough light. On the other hand, the IVS, or the brine shrimp in the centrifuge are getting enough artificial light from a lamp hanging over head. Temperature wise, the centrifuge has 30 degrees Celcius, which is the perfect temperature for brine shrimp to grow in, according to our research. The control brine shrimp are living in conditions of 25 degrees Celcius, only 5 degrees of temperature difference. This may have effected the difference in our expiriments. Also, in order to improve our expiriment, we could try to fix our sources of errors. We may have to put them into environments with the same temperatures and the brine shrimp in the centrifuge should go on for 24 hours a day. Also, we could extend our expiriment a little longer for more length of knowledge. Michael's This experiment, as all, must have a conclusion, and must answer several important questions including the purpose of the experiment, the major findings, and what data supported our hypothesis. Our hypothesis was that if you spun brine shrimp in a centrifuge to simulate 0 gravity, they would grow longer because they wouldn't have the weight of gravity to push them down. The purpose of this experiment was to find out whether this was true or not, and if it was, it would help brine shrimp hatcheries all over the world, because brine shrimp are hatched to feed fish in fish hatcheries. Our major findings were that the brine shrimp inside the centrifuge actually do grow larger, and that there was a higher percent hatching rate inside the centrifuge than outside. The data that supported our hypothesis was that when we measured the shrimp, the shrimp inside the centrifuge were between .7 and .8 millimeters, and the ones outside were between .45 and .55 millimeters. Other data that supported our hypothesis was that inside the centrifuge, there should be 1/4 the amount of brine shrimp than outside, because outside it was 4x the amount inside (inside: 15ml of water, outside: 60ml of water). Instead, inside the centrifuge, there was an average of 17 brine shrimp hatched, while outside there was an average of 2. Our findings compare with other reasearchers to be correct, and their hypothesis' are that any creature which has evolved for 1 g, when put in 0 g from a child, will grow much faster and become much higher than it would be on earth because the animal would have nothing holding it down, and therefore it would grow larger. There is one large explanation to why we got these results in our experiment. This explanation is that inside the centrifuge, it was around 30 degrees celsius, while outside itw as 25 degrees celsius. This is a major factor because the brine shrimp hatch faster with a higher temperature. However, our research points towards the fact that 25-30 degrees celsius is optimum brine shrimp hatching temperature, so many more brine shrimp should have hatched outside the centrifuge still. One large recommendation I have for improving our experiment is to make sure that the brine shrimp inside the centrifuge and outside the centrifuge have the exact same temperature. Our experiment now has a conclusion and a finishing, which explains everything from what our findings were to how it compares to those of other people.