Ch1 Flashcards
What is air made of
Oxygen nitrogen mix of other gases
What is air
Colorless,tasteless, order less mixture of gases
Why is air quality dependant on conditions all over the globe
Air moves
How much oxygen should be present in order for humans to survive
29%
What are the major threats to air quality
Radio active dust, sulfur, pesticides, lead
What is the greenhouse effect
When air is heated by uv lights and heat gets trapped in the earths atmosphere
What are the methods used to maintain and improve air quality
Keep ac maintained, filters, vintilation
What is water
Colorless odorless tasteless liquid
What is soil
Top later of the earth made up of organic matter for growing plants
How do characteristics of the land effect water quality
Runoff flooding erosion
What are the types of soil water
Gravitational
Capillary
Hygroscopic
What is erosion
The breakdown of something
What are major causes of erosion
Wind and water
What factors affect soil erosion by wind and water
Plants, farming practices, construction sites
What are the practices used to conserve water and soil
Wind breaks, water restrictions, no till, terrace farming
What are the threats to water quality
Chemicals, trash, oil, nuclear waves, pesticides
Why is water called a “universal solvent”
Change/dissolve substances
Describe the water cycle
Water forms into clouds
Precipitation falls to earth
Runs off to surface areas
Percolation/ground water
What are the ways the land holds water
Ground water
Surface water
What is plant growing media
Material plants grow in
How did early people improve soils
Accepted it or moved to better soil
Why are misses used for growing plants
They hold a lot of water
What are the two mineral based plant growing media used by horticulture industry
Perlite
Vermiculight
What is parent material
Where soils develop
How are parent materials named
Based on how they were formed
How are soils classified
physical chemical and topographical
What are the three classifications given to soils
Coarse
Medium
Fine
What are capability classes
Soil grouped based on how they can be used
What are capability subclasses
Soil limitations
What is a soil profile
See the different layers of soil
What is a soil horizon
Layers of soil
Describe the four soil horizons.
O- top layer, decomposed materials
A- under o decomposed materials
B- subsoil clay mineral
C- regolith rock material
What are soil textures
What it feels like and size
What is soil structure
Arrangement if soil into aggregates
What are aggregates
Sand silt clay. Held together by organic matter gel
Why are aggregates important
Holds water, reduces damage from rain fall
What are some benefits of organic matter in soil
Nutrients and water holding
Improve soil structure more porous
What are fertilizers
Chemical natural substance added to soil or land
What are the organic and inorganic sources of fertilizers
Inoganic- chemicals salt
Organic- manure
What are the methods used for applying fertilizer
Band application Top dressing Side dressing Foliure spray Starter solution
