Exam (elaborations)
SCSC 301 TAMU Test 1 questions with correct answers
- Course
- Institution
SCSC 301 TAMU Test 1 questions with correct answers
[Show more]
Content preview
SCSC 301 TAMU Test 1 questions withcorrect answers
Principle Components of Soil - ANSWERS✔✔ -Air 25%
-Water 25%
^ (healthy soil composition, those two vary from 50-0% to 0-50%)
-minerals ~45%
-Organics ~5% (again healthy soil it varies)
% are by volume not mass
Soil - ANSWERS✔✔ Dynamic natural body having properties due to the combined
effects of climate and biota as modified by relief acting on parent material over
time.
5 thing that affect soil - ANSWERS✔✔ Active:
-climate
-biota
Passive:
-parent material
-time
Modifying:
-relief (topography)
Biosphere - ANSWERS✔✔ from roots to canopy, all things living
Atmosphere - ANSWERS✔✔ from top soil on up
Lithosphere - ANSWERS✔✔ from top soil down
,Soil - ANSWERS✔✔ from top soil to bedrock
Functions of Soil - ANSWERS✔✔ Medium for plant growth
-Nutrients
-Support
-Water
-Oxygen (more absorbed through roots than leaves)
Regulates water flow (erosion)
Habitat for soil organisms (10^8-9 microorganisms in one gram of soil)
Engineering medium (build with or on)
Soil Profile - ANSWERS✔✔ a vertical section of soil through all its horizons and
extending into the parent material
Solum - ANSWERS✔✔ horizons A and B
Soil Horizons - ANSWERS✔✔ layer of soil about parallel to the soil surface, differing
in properties and characteristics from adjacent layers above or below it.
Parent Material - ANSWERS✔✔ The bedrock that lies beneath the soil horizons. Can
be termed either C or R.
-C: bedrock can be dug when wet
-R:solid rock
Eluviated - ANSWERS✔✔ A horizons, clay moves out of it
Iluviated - ANSWERS✔✔ B horizons, clay moves into it
Pedon - ANSWERS✔✔ Smallest 3-d unit of soil measurments with all characteristics
of soils. (smallest pedon is 1m^2 and 2m deep)
, Regolith - ANSWERS✔✔ everything unconsolidated; A,B, and C horizons but never R
horizon.
Colloids - ANSWERS✔✔ smallest soil particle (clay sized)
-suspended in h2o
-very small
-large surface area per size
-very reactive
Abundance of Elements in Crust - ANSWERS✔✔ 1. Oxygen
*2. Silicon
3. Aluminum
*4. Iron
*5. Calcium
*6. Magnesium
*7. Sodium
*8. Potassium
* = plant essential nutrients that come from the soil
Groups of Minerals - ANSWERS✔✔ Silicates
Oxides
Carbonates
Phosphates
Sulfates
Halides
Silicates - ANSWERS✔✔ -Quartz (SiO2) - dominate sands, very resistant
-Feldspars such as orthoclase, KAlSi3O8
-Amphiboles, pyroxenes, micas
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 Fordenken. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83249 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now