2644 - CSUN ScholarWorks - California State University, Northridge

Journal of Student Research Abstracts · 83
planarians took to travel a distance of 10 em. The five planarians from the experimental group were exposed
to an EMF around 2.58*10A-3T(Tesla) when they traveled the 10-cm distance. No EMF was applied to the
other five planarians from the control group. After 30 trials, there was no significant difference between the
speed of planarians from both groups. (P>0.1) I further tested my hypothesis on my second experiment by
increasing my sample size. Instead of using the same five planarians throughout all the trials like my first lab,
I used planarians that had never been tested before for every trial to obtain more accurate data. However, the
results were the same. The variation was not significant (p >0.1). Therefore, I concluded that EMF did not disrupt
the direction of the flow of sodium ions by applying a force on them as they traveled through a neuron
and therefore did not cause the planarians to travel slower.
2831
THE ENVIRONMENTAL FACTORS AFFECTING JONES CREEK.
Justin Rhodes, Anita Haydar, M.C. Barlow (teacher). Smithfield High School, 14171 Turner Drive,
Smithfield, VA 23430.
The purpose of our research was to determine the quality and health of Jones Creek and to establish a database
for the comparison of data collected by future students. The data was collected at the Nike Park site
through various methods, which include water tests for: dissolved oxygen, salinity, pH, temperature, phosphates,
nitrates, carbon dioxide, turbidity, and silica. Air temperature, air pressure, and other weather factors
were also recorded. The various land and water uses and plants and wildlife were noted as well. We were also
able to determine the various water and land uses and their effect on the water. From our data and observations
the creek appears to be in good health. The dissolved oxygen and pH are at healthy levels and there are nutrients
in the water but not enough to allow for any eutrophication. A great deal of wildlife and plant life was
observed and seemed to be in good health. We were successful in our collection of data and future students
will be able to monitor changes in the river based on our results.
2832
THE EFFECTS OF WAVELENGTHS OF LIGHT ON EUGLENA GRACILIS.
Stephen Mar and Steve DeGusta (teacher). John F. Kennedy High School, 6715 Gloria Drive, Sacramento,
CA 95831.
In order to find if the rate of photosynthesis is related to wavelengths of light, cultured Euglena gracilis was
separated into three different solutions; one without food coloring (White), one containing three drops Red
food coloring per 50ml cultured euglena (Red), and one containing two drops Green food coloring and one
drop Yellow food coloring per 50ml cultured euglena. (Green). Over the course of eight days, the euglena population
of each solution was counted. On the eighth day, the Red solution showed a significant decrease in population
compared with the euglena solution without food coloring (O.Ol>p>0.001). The Green solution showed
a significant decrease in population compared with the euglena solution without food coloring (p