Soils & Soil Physical Properties
Unit 2.1 | Part 2 – 31
COLOR BOOK EXAMPLE
Lecture 2 Reference: A 6 a)
PURPOSE
To show how soil color is described
MATERIALS
Munsell or Earth Colors soil color charts
METHODS
Show how the color charts and Munsell color
notation are used.
PERMEABILITY DEMONSTRATION
Lecture 2 Reference: A 11 c) i (See t Figure 2.7)
MATERIALS
- 4 jars or beakers, about 2 cup size
- 2 2-liter plastic soda bottles
- Coarse gravel, rounded is better, 1/2–1 inch,
about 1 cup - Fine gravel, < 1/4 inch, about 2 cups
- Sand, about 2 cups
- Clay, dry and ground, about 2 cups
- Water
METHODS
- Cut the bottoms out of the soda bottles.
- Invert the bottles into two of the jars to make
funnels. Label one “Sand” and the other
“Clay”. - Place the coarse gravel into the bottom of the
funnels, enough to plug the holes so that the fine
gravel won’t go through. - Cover the coarse gravel with about a 1 inch
thick layer of fine gravel. - Place the sand and clay into the appropriate
funnels. You want a layer about 2–3 inches
thick. - Fill the other jars with about 3/4 to 1 cup of
water each. - Using both hands, pour the water into the
funnels at the same time and rate. - See which soil the water passes through faster.
Instructor’s Supplemental Demonstrations & Examples
Illustration by José Miguel Mayo
t Figure 2.7, Permeability Demonstration