Summary
Full Summary of Soil for Grade 11
- Course
- Institution
Summarizes soil- - overview of soils - components of soil - soil horizons - soil-forming factors
[Show more]
Seller
Follow
alex90
Content preview
Geo notesPublished by Alex Kotton
Soils
What is soil- is a mixture of broken rock and minerals, living organisms and decaying organic matter
called humus.
Study of soils is called pedology
Edaffic= influenced by soil. Edaffic factors refer to soils
Soil is a substrate (underlying layer) that in the point of interaction between abiotic and
biotic factors
Abiotic- non living Biotic- living
Atmosphere Macro Micro
Lithosphere Big animals Bacteria
Water Slugs Viruses
Sunlight Create a climate or Trees and grasses
Moisture biome or ecosystem Plants
Temperature Earthworms
Geology Fish
Weathering = the breaking down of rocks, soil and minerals through
contact with the earth’s atmosphere and living organisms.
1. Chemical weathering: needs water in order to weather / erode
effectively, high temp (rust oxidation + reduction in carbonation)
2. Physical weathering: expansion and contraction, freeze thaw and
Soil is created by physical weathering salt crystallization
Soil: connects the living and the non-
living (i.e.. Earth worms & water)
Leaching: infiltration of water
through the soil
Sand
Plant roots make space in the Silt
soil for air and grow between Clay
rocks
Biological movement of
animals on foot paths
Bedrock
1
Xerophytes- plants that adapt to dry conditions
, What is parent rock?
Parent rock is broken into 3 particle sizes:
1. Sand
2. Silt
3. Clay
Igneous rocks produce the most mineral rich soils
Soil components
soil componenets
mineral matter organic matetr biota
water air
What is mineral matter
Mineral matter is the main mineral from the parent rock (eg. Sandstone has a lot of silica
therefore the main mineral matter component will be silica)
Mineral matter determines soil structure
What is air
Air is made of nitrogen and oxygen and other gases in the atmosphere
What is water
Water seeps through the soil through the soil pores (pore=the amount and size of opening
between the particles)
Organic matter
O.M aka humic acid
Type 1- humus: dead organic matter staring to decay (dead animals or plants)
Type 2- maribund: dead plant and animal matter that has not started to decay yet
Biota
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller alex90. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.12. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now