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Geog3pt1

Geog3

QuestionAnswer
What is the most influential soil-forming factor? Climate
What is the difference between humus and litter? Humus is decomposed, Litter is undecomposed
Is the air held in soil is rich or poor in Oxygen? Poor
What is responsible for most metabolic activity in soil? Hundreds of millions of microorganisms in the soil
What percentage of soil volume is usually pore space? 50%
What percentage of soil volume is organic material? Less than 5%
What forms the bulk of soil? Inorganic material
What is illuviation? Deposition at a lower level
Particles in soil vary in size. Can you list them in order of size? Sand, silt, clay
What do we call a particle that is bigger than a molecule but can’t be seen with the naked eye? Colloid
Approximately how many soil 'series' are found in the United States? 12,000
In which soil horizon do seeds germinate? A horizon
What soil will have the highest organic content? O horizon
What soil horizon contains the zone of eluviation? E horizon
What soil horizon is called the regolith? C horizon
Does soil have a large or small percentage of organic content? Small
Is there both living and dead organic material/organisms in soil? Yes
Are microorganisms in soil harmful to other plant and/or animal life? No
Are earthworms abundant in soil? Yes
Is the biological component in soil important? Its small, but yes its important
Where is the Mohorovicic Discontinuity (Moho) located with the structure of the Earth? At the base of the crust
Created by: iamerror92
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