UEI+soil+test+project

UEI Final Project Katherine Colon, Teven Davis, and David Dickson



Introduction: We started off by collecting soil for five weeks. Once a week we would collect the soil and test them with our pH Soil kit. We decided to collect the samples week by week because the elements and changes in weather will affect the pH and possibly give a better set of results. Key Question: How does the pH change of the soil vary depending on the site the soil is taken from? Hypothesis: We think the samples closer to the water will have a higher pH.

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EXPERiMENT Materials: pH Soil kit, soil near West Roxbury High School, and thermometer  Time frame:  March 30,2009 - April 30,2009 Procedure: Soil Kit. . . <span style="font-size: 130%; color: #0000ff; font-family: Georgia, serif;">1. Get a shovel of soil 2. Put on goggles and aprons (move carefully at all times) Dangerous chemicals 4. fill test tube to line 4 with pH indicator 5. use .5g sppon to add 3 spoonfuls of soil 6. cap it. wait for one minute. let stand for 10 minutes 7. when it is settled. hold the tube in the middle of the pH wide range color chart 8. match or estimate for pH result 9. CLEAN up all the equipment

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<span style="display: block; font-size: 180%; color: #00ff00; font-family: Georgia, serif; text-align: center;">RESULTS <span style="font-size: 130%; color: #0000ff; font-family: Georgia, serif;">3/30/09 sunny outside, 55 degrees, moist soil,near the football field, = pH result: 6 4/8/09 sunny and windy, 48 degrees, dry soil, near the pond, = pH result: 7 4/13/09 clear, degrees, dry soil, near the football field, = pH result: 4 4/22/09 clear, sunny, degrees, moist soil,near football field = pH result: 6 4/30/09 clear, degrees. dry soil, near the pond, = pH result 7.5

<span style="font-size: 150%; color: #00ff00; font-family: Georgia, serif;">Conclusion: <span style="font-size: 80%; color: #0000ff; font-family: Georgia, serif;">We observed and noticed samples taken closer to the water had a higher pH and samples taken further from the water had a lower pH. We believe this is because the water could have washed into the soil. The water mixes with the soil which could cause the pH to be higher. We should of taken at least 10 more test samples to have a better understanding of trail and error. Next time we will have more test samples so we could have a more accurate results.