Font size
WorksheetsSoil Structure
Total questions: 15
Worksheet time: 8mins
What is soil structure?
The formation of aggregates and peds in a soil.
The amount of each soil particle in a soil.
The darkness or lightness of soil.
The different soil horizons in a profile.
True or False: Soil aggregates are groups of soil particles that bind to each other more strongly than to adjacent particles.
True
False
True or False: Soil peds are groups of soil particles that bind to each other more strongly than to adjacent particles.
True
False
Which term means the distinctness of an aggregate?
Grade
Class
Type
Which type of soil structure have little to no soil aggregates?
Compound Soil Structure
Simple Soil Structure
(Mark All that Apply) Which of the following soil structures are cuboidal aggregates.
Crumb
Platy
Columnar
Granular
Blocky
Which soil structural type has long vertical dimensions and short horizontal dimensions?
Cudoidal
Prismatic
Platy
Puddled
What soil aggregates have been ruined by excessive tillage or tillage in not suitable conditions.
Blocky
Columnar
Platy
Puddled
Which one is NOT a simple soil structure type?
Simple Grain
Massive
Granular
All Options are Simple Soil Structures
Which one is not a classification of a soil class?
Very Fine
Fine
Medium
Course
Which set of numbers goes along with the blocky soil structure?
< 10 mm, 10-20 mm, 20-50 mm, > 50 mm
< 2 mm, 2-5 mm, 5-10 mm, > 10 mm
< 20 mm, 20-50 mm, 50 - 100 mm, > 100 mm
Which two soil structural classes use the same measurements?
Blocky
Granular, Crumb
Platy
Columnar, Prismatic
What is a measure of how well the aggregates are cemented together and how easy they are broken?
Type
Classes
Grades
Which soil grade has aggregates are barely observable in moist soils. The structure will break into a few observable aggregates or peds?
Weak
Strong
Moderate
Which soil grade has aggregates or peds are moderately well-formed and distinct in place. Many well formed aggregates are observed?
Weak
Moderate
Strong
