basic soils final

What are the different soil particles

The primary soil particles are sand, silt, clay, and gravel.

Which particle is the largest in size

Gravel is the largest soil particle.

Which particle is the smallest in size

Clay is the smallest soil particle.

What has the best drainage

Sand has the best drainage because of its large pore spaces.

What has the worst drainage

Clay has the worst drainage because its tiny pores hold water very tightly.

What has an impact on the rate of soil formation

Climate, parent material, topography, and biological activity all impact the rate.

What are the three primary things that determine the rate of soil formation

The three things are Climate, Parent Material, and Time.

What is soil texture

Soil texture is the relative proportion of sand, silt, and clay in the soil.

What is soil structure

Soil structure is the way individual soil particles clump together into aggregates.

Soil aggregates, what are they

They are clumps of soil particles that stick together to form distinct shapes called "peds."

What binds soil aggregates

Soil aggregates are bound by organic matter, plant roots, and microbial glues.

What influences the stability of aggregates

Stability is influenced by the amount of clay, organic matter, and the level of biological activity.

Why is it important to have pore space

Pore space is essential for the exchange of oxygen and the movement of water to roots and organisms.

What is the definition of soil acidity

Soil acidity is the concentration of hydrogen ions ($H^+$) in the soil solution.

What is soil pH

Soil pH is the specific measurement used to indicate how acidic or alkaline the soil is.

What is the scale or range of soil pH

The pH scale ranges from 0 to 14.

Why is it important to know the soil pH

It is important because pH controls nutrient availability; if it is off, plants cannot absorb nutrients.

What pH value is considered basic

A pH value above 7.0 is considered basic (alkaline).

What pH value is considered neutral

A pH value of exactly 7.0 is considered neutral.

How do we measure soil acidity

We measure it by checking the hydrogen ion concentration in the soil solution.

What is the name of the test that is performed

The test is called a Soil pH Test.

What was the major cause of the Dust Bowl

The major cause was severe drought combined with poor farming practices like over-plowing.

What is on-site damage by erosion

On-site damage includes the loss of topsoil, organic matter, and nutrients from the immediate area.

What is off-site damage by erosion

Off-site damage includes sediment clogging waterways and dust, causing human health/lung issues.

What is geological erosion

Geological erosion is a natural leveling process that occurs very slowly without human influence.

What is accelerated erosion

Accelerated erosion is caused by human disturbance and is 10–1000 times more destructive than natural erosion.

What is sheet erosion

Sheet erosion is the uniform removal of soil in thin layers by rainwater.

What is rill erosion

Rill erosion occurs when runoff concentrates into small, visible scouring channels on the landscape.

What is gully erosion

Gully erosion creates deep, large channels that cannot be removed by ordinary tillage.

What are the advantages of conservation tillage

Advantages include increased organic matter, improved biological activity, and better protection against erosion.