1.11 Soil 1

Subsoil

________ is lightly colored and contains clay and minerals that came down from above.

Loam

________ is a mixture of sand, silt, and clay in varying proportions.

inorganic material

The ________ consists of mineral particles of various sizes.

mineral particles

The ________ are classified by grain size.

Top soil

________ is a dark- colored mixture of humus and mineral particles.

organic matter

The ________ called humus, is the decayed remains of plants and animals.

Soil

________ is a mixture of inorganic material, organic material, water, and air.

Soil impressions

________ can preserve evidence.

Beach soils

________ may contain high amounts of calcite from marine organism.

Sand

________ is the largest grain (0.05- 2.0mm), Clay is the smallest grain size (less than 0.002), and Silt is an intermediate size.

Humus

________ is decayed organic material.

Black soil

________ has lots of organic matter with little or no air.

color of soil

The ________ is determined by using the Munsell scale.

Ex

Predominantly sand soils are gritty, while clayey soils are sticky