SOIL!!!
Material which nourishes and supports growing plants; foundation of every living thing
What is Soil?
The soil horizon that consists of top soil
What is the A Horizon?
Rubbing soil between fingers to try and find texture of soil
What is the Ribbon Test
The process by which weathered rock and soil are moved from one place to another
What is Erosion
1Climate 2Organisms 3Parent material 4Topography 5Time
What are the Soil forming factors (CLORPT)?
The soil horizon that consists of bedrock
What is Horizon R
Soil feels floury
What is silt
is the process by which sediments (small particles of rock) are laid down in new locations
What is Deposition
What covers 3/4 of the Earth
water (oceans, seas, rivers, lakes, etc.)
a tool used to classify soil by its texture based on the percentages of sand, silt, and clay
What is the Soil Textural Triangle?
The largest mineral in soil
What is Sand
the breaking down of rocks into smaller pieces
What is Weathering
The four agents of soil erosion
What is wind, water, gravity, glaciers?
the physical breakdown of organic molecules of dead material into simpler molecules
What is Decomposition?
The four main components of soil
water, air, minerals, organic matter
a distinct layer of soil that runs parallel to the surface, which differ in color, texture, structure, and other properties.
What is a Soil Horizon
The expected population by the year 2050
about 9.7 billion people
Original Geologic material
What is Parent Material?
The component of soil that is made up of decayed plant and animal material
Organic matter (humus)
20% Clay 40% Silt 40% Sand
Loam soil
a vertical section of soil that shows the different layers, or horizons, of soil from the surface to the bedrock
What is a Soil Profile
What major environmental disaster in the 1930s was caused by severe soil erosion?
What is the Dust Bowl?