Soils quiz 1

Name the six functions of soils

1)Engineering purpose( medium in all things we build)

2)physical support

3)gas exchange( modifies atmosphere)

4)regulator of water supply/purification

5)recycle system for nutrients( medium for plant growth)

6) habitat/support for living things

relationship between Surface area to soil sediment size

surface area increases, size decreases

relationship between porosity to sediment size

higher porosity = smaller sediment size

As surface area increases so does the potential to _______and hold __________

attract and hold water

true or false: Increases in soil porosity correlates to increased soil bulk density

False

what percentage of a typical soil is composed of inorganic material( minerals)

40-45%

smallest unit that can be considered a soil and still has all the properties of the larger soil body

pedon

closeness to a primary color

hue

the percentage of each sediment size in a soil determines

soil texture

the maximum size for a soil particle

2.0mm