Soil Systems

The finest soil particles are known as -

(HINT: They trap & hold nutrients ... sometimes out of plants' roots' reach)

• silt

• clay

• loam

• sand

soil storages include (select all that apply)

• leaching

• water

• nutrients

• air

• organisms

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-1

The A soil horizon (topsoil) is made up of

• leaf litter

• bedrock

• clay and minerals

• decomposed organic matter and minerals

Weathering is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Leaching is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Tags

NGSS.MS-LS2-4

Erosion is a process where

• organic matter is broken down into smaller parts, usually by living organisms

• rock is broken down into soil and small grains

• soluble nutrients and minerals are drained from soil through water action

• soil/rock is moved from one surface to another by wind/water/glaciers

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

In which horizon is most of the HUMUS?

• Horizon A
• Horizon B
• Horizon C
• Horizon D or R

In which answer choice are the soil particles arranged in order from LARGEST to SMALLEST?

• Silt, sand, clay
• Silt, clay, sand
• Clay, silt, sand
• Sand, silt, clay

Which soil has the greatest permeability or quickest flow?

• sand

• silt

• clay

• humus

The main reason we must improve soil quality is to...

• Ensure we can grow more food

• Ensure we can grow more food in a sustainable way

• Ensure that the soil does not disappear

• Ensure that we do not run out of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1