To describe, sort, and define soils on Earth.
Soils are an important natural resource on Earth. Soils support plants and store organic matter. What do soils look like? Is a handful of soil just plain dirt or are there different kinds and sizes of particles?
|sieve||grams of particles|
Make a "putty" by mixing a small amount of soil and water in your hand. Try to form a "ribbon" of soil by squeezing your fist tightly closed. If the soil sticks together well, then the soil is mostly clays. If it sticks together moderately well, then the soil is loam, a mixture of sand and clay. If no ribbon can be formed, then the soil contains mostly sand and aggregate (broken rock pieces).
How would you describe your soil sample after this simple compaction
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