SCI 207 Week 2 Lab Worksheet


Lab Worksheet


Activity 1.Soil Sample A will be 30% silt, 50% sand, and 20% clay

Activity 2. I think the Sand will been the most porous. Soil Sample A will be second most. And the clay will be the least porous. The sand will allow the most air and water thru. I believe that Soil Sample A has a larger amount of Silt and Sand in it so that will be second most. The clap does not let much water or air thru and from my reading it seems like it will be the least porous.

Activity 3. I think that Soil Sample A will have the higher PH level cause of the regular water it receives in addition to the bug and plant life being diverse. Soil sample B came from an open field at the park where not much is growing or stimulating the soil so I think it will have a lower PH level

Activity 4.

I believe soil sample A will have a higher nutrient level because I got that sample from my flower beds. Soil sample B will have a lower nutrient level because I pulled it from my local park where not much has been done to the soil.

Observations/Data Tables

Data Table 1. Particle Size Distribution and Soil Type

  Depth of Clay Layer (cm) Depth of Silt Layer (cm) Depth of Sand Layer (cm) Total Depth (cm) %Clay %Silt %Sand Soil Texture
Soil Sample A 0cm 1cm 3.5cm 4.5cm 0% 22% 78% Loamy Sand

Data Table 2. Determination of Soil Porosity

  Time Taken for First Drop to Emerge from Column (s)
Sand Sample 7 sec
Clay Sample 5 min 40 sec
Soil Sample A 59 sec

continued on next page

Data Table 3. pH Comparison of Soil Samples

  Soil Sample A Soil Sample B(Location Description: Local Park)
pH 7.0 Neutral 6.0 Acid

Data Table 4. Nitrogen, Phosphorus, and Potash Comparison in Soil Samples

  Nitrogen Phosphorus Potash
Soil Sample A High High High
Soil Sample B Low High High


Activity 1.Activity 2.

Activity 3.Activity 4.

Lab Questions

Please answer the following entirely in your own words and in complete sentences: Introduction

Background—What is important to know about the topic of this lab? Use at least one outside source (other than course materials) to answer this question. Cite the source using APA format. Answers should be 5–7 sentences in length.

[Write your answers here]

Outcomes—What was the main purpose of this lab?

[Write your answers here]

Hypotheses—What were your hypotheses for the activities of this lab? Identify each hypothesis clearly, and explain your reasoning.

[Write your answers here]

Materials and Methods

Using your own words, briefly describe what materials and methods you used in each of the activities. Your answer should be sufficiently detailed so that someone reading it would be able to replicate what you did. Explain any measurements you made.

[Write your answers here]


Based upon the results of each activity, explain whether you accepted or rejected your hypotheses and why.

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What important information have you learned from this lab? Use at least one outside source (scholarly for full credit) to answer this question. Cite the source using APA format.

Answers should be 5–7 sentences in length.

[Write your answers here]

What challenges did you encounter when doing this lab? Name at least one.

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8. What additional information would you need to know, beyond what you did in this lab, to

determine whether a farm would be agriculturally productive or not? Provide at least 3 examples.

[Write your answers here]

Literature Cited

9. List the references you used to answer these questions. (Use APA format, and alphabetize by the last name.)

[Write your answers here]

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