• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Experiment to determine soil texture by touch and physical analysis

Extracts from this document...

Introduction

________________ Introduction: The most important measure of soil is texture and size distribution of mineral particles. This is because the divided soil particles have a greater surface are per unit mass than the combine particles (Coarse particles). Therefore it can be said that a large mass of gravel or sand, will be less relevant in relation to chemical reactions than a minor amount of fine silt and clay. This is because it allows for better exposure to nutrients and the retention of moisture. Soil texture is the categorization of soil particles into three groups. Firstly, clay which is less than 0.002mm. Secondly, silt which is between 0.002 and 0.005, and third, sand which is between 0.005 and 2mm. With the use of Stoke?s law that is the governing rate of sedimentation of particles that are suspended in water. ...read more.

Middle

It included the silt and clay. After approximately 2 hours, the mass and temperature had dropped to 10.5 grams and 19 degrees Celsius. Calculations: 13 ? 10.5 = 2.5 Where 2.5 is the silt, and 10.5 is the clay. This resulted in the sand being 80.43 ? 13 = 67.43 grams. Therefore we can say that the: - Percentage of silt = (10.5/80.43)x100 = 13.07% - Percentage of clay = (2.5/80.43)x100 = 3.10% - Percentage of sand (loamy sand) = (67.43/80.43)x100 = 83.83% Additional results include: Air dry weight which equals: 137.55 grams Oven dry weight which equals: 79.53 grams Moisture which equals: (139.45 ? 137.55) = 1.9 grams Therefore: (1.9/78.53) = 0.002 And so (0.002 x 100) = 2 Where moisture = 2% Evaluation: Using the group soil sample, we added water which enables us to squeeze the soil paste in-between our fingers to discover the soil texture. ...read more.

Conclusion

However, our results could have been victim of human error or random error due to the sample soil being dark brown which meant that it should have originally been a silt clay loam. This could have resulted from the lack of precision and accuracy while carrying out the experiment in relation to accurate measurements and procedures. Conclusion: On the whole, the overall aim of the experiment was reached. We were able to determine the soil texture through the method of feeling, which allowed us to discover that the soil sample was mostly sand. The hydrometer allowed us to analyse and get more accurate results of how much clay, silt, and sand was actually in the sample. The moisture rate was then successfully calculated which enabled us to proceed further and calculate the bulk density of the soil. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Rocks & Weathering section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Rocks & Weathering essays

  1. The Factors that form soil

    It is a common misconception that tropical rainforest soils will have more humus than tundra soils because of the larger amount of vegetation.

  2. 'I think that sedimentary stones will be more affected by weathering than igneous stones.' ...

    would have liked to have written more in-depth comments on each stone, but I didn't have the time do stop and do this for each stone. I would have also like to increase my sample size but there were no more granite stones in the Graveyard and I did not have the time anyway to do any more.

  1. Investigate the relationship between the solid geology and the physical landscape from Ingleton to ...

    The River Twiss therefore tumbles over the steps of the sandstone, while the plunge pools have been eroded from the slate. It was found that the vegetation changed above Pecca Bridge from typical limestone woodland to that associated with more acidic conditions to an environment of bracken and heather which

  2. Construct two Graphic Log Sections, one on the eastern exposure (ST 3375 6645) and ...

    The grain size also backs up this theory. Location two contains more variety of grain sizes, from fine to larger. The larger particles are heavier therefore cannot travel as far with waves or wind. Finer grains are deposited further away as they are lighter and more easily carried (by suspension and solution).

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work