I NEED SOME ONE\'S HELP PLEASE . $55.00 dollars if completed correctly and image
ID: 234616 • Letter: I
Question
I NEED SOME ONE'S HELP PLEASE . $55.00 dollars if completed correctly and images of jars and site taken properly
Lab Assignment Manual
Lab 1—Soil Composition
In this exercise, you will determine the soil composition at three different locations in your local area. You will compare soil composition at sites that have different topography, and (possibly) different vegetation.
Materials
small spade or shovel
3 glass jars (approximately 1 L in volume)
permanent marker
ruler
Instructions
Choose sites for the following samples:
hill sample, taken from the side of a hill (the steeper the better)
yard sample, taken from a level surface (e.g., backyard)
river bank sample, taken from the side of a creek or river
Collect a soil sample from each site, and place each sample in a separate jar. You only need to fill each jar approximately one-third full of soil. Label each jar with its contents (source), using a permanent marker.
Record the slope and types of vegetation at each site. Take a digital photograph of each site.
Add water to the soil in the jars until each jar is almost full (leave an air space). Shake each jar vigorously and then let the jars sit undisturbed for a full day (24 hours).
Layers of clay, silt, and sand should be visible. Clay will be the top layer, silt will be the middle layer, and sand will be at the bottom. Any small rocks or pebbles will be at the very bottom of the sand layer.
IMPORTANT: Take a digital photograph of each jar, to show the layering.
Measure the depth of each layer with a ruler, in millimeters, and record your data in a table that looks like this:
hill sample
yard sample
riverbank sample
total depth (mm)
depth of clay (mm)
depth of silt (mm)
depth of sand (mm)
% sand
% silt
% clay
soil type
Note: If your layers are not very clear, you may want to try shaking the sample again, or start over. If there is too much soil in the jar to begin with, it is more difficult to generate a homogeneous slurry when you shake the jar.
For each sample, calculate the percentage of each soil component and record it in the table above.
Identify the type of soil by matching the percent soil components in the soil texture triangle found at the link below. Record each soil type in the table. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/home/?cid=NRCS142P2_054167
Report
Your report should consist of the following components:
A brief introductory statement (i.e., what were you investigating?)
A short description of each site, with digital photos of each site
The soil composition table with your results
Digital photos of the settling jars
A discussion of the results. Explain any variation in soil composition among the three sites. How does topography appear to affect soil composition?
hill sample
yard sample
riverbank sample
total depth (mm)
depth of clay (mm)
depth of silt (mm)
depth of sand (mm)
% sand
% silt
% clay
soil type
Explanation / Answer
answer-
sites- We have selected 3 sites for soil sampling
1- Hill side sample from Lesser Himalaya
2- Backyard sample from my lawn in New Delhi
3- River Bank Sample from bank of river The Ganga In Rishikesh
Recuriements- 3 Jars, Permanent markers, Small shovel
Procedure- We visited each sites take the sample of soil from each site with the help of shovel and put in 1/3 on jar and then filled up with water than shakes it virgously then left each jar for 24 hours.
Observations- In the hill side sample gain size are bigger they contains sand, gravel , grannule etc. In river bank side amount of silt is greater than gravel and mud. and In Backyard side the side amount of clay or mud is greater than silt and sand.
then after put the sample in jar we added water then shake as reasulkt under 24 hour o observation we found that course grain particle like gravel and grannule settle down at bottom because they are dense and have high specific gravity and san particle occur in suspension while clay and mud grain occur on top and float at the top with water in each jar.
Results
In Hill area there is abundense of coarse grain particle while in river bank there is majorily silt size particle while in Backyard mostly clay soil occurs.
Topography have very important role in the development as well as in the composition of soil. In the flat topographic area genrally finer grain soil occur. In Steeper slopes and abrupt topography generally coarse grain soil occur because there is more influence of mechanical weathering.
Hill Sample Backyard Sample RIver Bank Sample total Depth (mm) 100 100 100 Clay Depth (mm) 20 60 30 Silt Depth (mm) 30 30 60 Sand Depth(mm) 50 10 10 % sand 50 10 10 % Silt 30 30 60 % clay 20 60 30 name of soil sandy soil clay or loamy soil silty soilRelated Questions
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