Natural Resources and Soils

These factors affect the formation of soil

• Wind, climate, water
  
• Living organisms, parent material, climate
• Time, water, wind
  
• Parent material, water, climate

Soil texture affects _______________

• The storage and movement of air and water through the soil
• The way the soil is assembled
• The amount of organic matter that is present in the soil
• None

The movement of nutrients and other materials through the soil profile is referred to as

• Field capacity
• Permeability
• Leaching
• Weathering

Sand and has smaller particles than ______________

• Clay
• Silt
• None 
• All

Cation exchange capacity is____________

• The capacity of the soil to hold its structure
• The total amount of exchangeable ions held by the clay
• The ability of the soil to move ions from one particle to another
• The capacity to exchange between the organic fraction and inorganic fraction

What soil is course and drains quickly?

• Sand
• Silt 
• Clay
• Loam

Humus is found in _____________?

• Top Soil
• Minerals
• Houses
• Rock

What is a a soil horizon?

• A layer of soil
• A factor influencing how soil is formed
• A technique used to map soils
• An organism found within the soil

How does a 'sandy' soil feel like to touch?

• Sticky
• Gritty
• Smooth
• None

A clay mineral common in soils, 1:1 non-expanding clay.

• Vermiculite
• Kaolinite 
• Smectie
• Iron and aluminum oxides.