Nelson+Group+4


 * Nelson: Laura Tenesha, Devon, Daniel

Purpose: Water pH affecting aquatic plant growth.

Research:

http://www.ncsu.edu/sciencejunction/depot/experiments/water/lessons/pH/pHlesson2.htm

http://www.wate-research.net/Watershed/pH.htm

[|http://www.cotf.edu/ete/modules/waterq/wqglossary.html]

Hypothesis: Our hypothesis for plant number one, the neutral pH level after 3 weeks will grow normally, and atleast live for the test period. Our hypothesis for plant number two, with the more acidic pH level after 3 weeks will grow alot slower, or even die before the end of the test period. Our hypothesis for plant number three, with the less acidic pH after 3 weeks will grow faster then normal, and survive much better. We predict that the third plant will be the healthiest by the end of the experiment.

Experiment: Test one type of aquatic plant at a normal pH level, a more acidic pH level and a third one with a less acidic pH level. Adjust the pH levels acordingly.

Procedure:

Step 1 - Get 3 of the same plant

Step 2 - Get environment for the plants ( 3 aquariums )

Step 3 - Put plants in the seperate aquariums with controlled pH levels modified to less and more acidic.

Plant 1 - Leave the pH level default from 6.0 - 7.5

Plant 2 - Adjust the pH level from default to something below 6.0

Plant 3 - Adjust the pH level from default to something above 7.5

Step 4 - Observe for 2 weeks and note all changes in the plant activity.**


 * Step 5 - Draw your conclusions

Analysis: Day one: normal - not much of a change, Less - Not much of a change , More - Starting to change ,

Final Day: - Normal - A bit of a change. But still rather healthy Less - Nearly completely decroded More - Completely Decroded (Looks alot like vomit)

This is the one with less acidic

This one with more acidic

This is the one that was left at normal levels.

Conclusion: Conclusion- Our hypothesis was incorrect because we predicted that by the end of our experiment the plant with less acidic would be the healthiest but it wasn't, the plant that we left at normal was the healthiest. We think that this happened because the plant with no acidic wasn't affected by anything, and the other two plants were, because the acidic distroyed the plants, because it was stronger and could tear the plants apart instead of helping them grow.**