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If water is drained through silt, sand, or clay then sand wi

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Daran deCalesta

on 19 February 2015

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Transcript of If water is drained through silt, sand, or clay then sand wi

What type of soil, based on particle size, will allow water to drain the fastest?
Hypothesis:
Variables:
Our control variable is the dryness of the soil before the experiment.
The soil was dried before the experiment.
Materials:
Procedure:
Data Tables and Graphs
S.L.E.
L.2 ,P.5, and L.5
Conclusion
The results supported our hypothesis because sand, which has the largest particles, drained through the fastest; and clay, which has the smallest particles, drained through the slowest.
Thanks for watching!
If water is drained through soil of
different particle size, then the soil with the largest
particles will drain the fastest
Our independent variable
is the type of soil based on
particle size.
Our Dependent Variable is
the time it takes for 50% of the
water to drain through each soil
type
Our Control
Variables are the
3 cups of different dry soil samples
one 2-liter bottle
coffee filters
water
1-cup measuring cup
stopwatch
rolling pin
Gallon-sized Ziploc bags
Pencil & paper for recording data
1. Dry the soil by putting a thin layer on paper a few days
prior to the experiment
3. Use the rolling pin to break down large clods
4. Prepare the 2-liter bottle: cut the bottle in half 5 1/2 inches from the bottom, invert the top of the bottle so the neck is facing down inside the other half acting like a funnel.
5. Place a coffee filter into the funnel and fill with 3 cups
of dry soil. Cover the soil with another coffee filter.
6. Pour 2 cups of water into the filter and soil
sample
2. Place dried soils in individual Ziploc bags
7. Use a stopwatch to time how long it
takes for 50% of the water (approximately 1 cup)
to drain through the soil.
8. Record and repeat with 2 other types
of soil. Perform 3 trials for each soil type.
Data Table:





Graph:
If we were to do this experiment again, we would
use different soil types. An error that occurred
was on our first trial, we forgot to place the
second coffee filter into the funnel. If you are to do
this experiment, make sure to time it correctly and
pour the water evenly.
by: Shawn and Rogan deCalesta
Background Information
There are three main types of soil based on particle size.
Sand - largest particles, loosely packed, water moves through easily
Silt - much smaller than sand
Clay - extremely small particles, fit together so closely that it is difficult for water to flow through
Loam:
Mixture of the 3 types of soil plus organic material
Ideal for growing plants and crops
Retains the right amount of water
Allows excess water to drain
3 types of soil used in this experiment:
Fine Sand
Silty Loam
Clay Subsoil
Full transcript