Soils Review Module B Unit 1 And 2

Front 1

Soil

Back 1

mixture of physically and chemically weathered mineral matter, supports plant life

Front 2

Sediment

Back 2

Weathered minerals have been eroded and transported and re-deposited

Front 3

Dif between soil and sediment

Back 3

Soil can support plant life.

Front 4

Smallest sediment size to largest

Back 4

Clay, silt, sand, gravel

Front 5

Well sorted sediment

Back 5

has one or two size groups which predominate, with little or none in other sizes

Front 6

moderately sorted

Back 6

sediment has one or two size groups which predominate, but other sizes also have significant numbers of grains

Front 7

poorly sorted

Back 7

sediment has roughly equal amounts of several grain sizes; no one size group predominates

Front 8

Size percentage of a sediment

Back 8

Take total grains divided by grains larger than 8 mm and multiply by 100

Front 9

Histogram

Back 9

Bar graph of percent

Front 10

How and why do sediment grains become rounded?

Back 10

Transportation through a stream and through air

Front 11

Grain size and distance of transport

Back 11

further it goes, more erosion occurs, more rounded it gets

Front 12

Stokes law

Back 12

rate of settling of a particle through water is proportional to the grain diameter. larger grains settle faster

Front 13

O horizon

Back 13

Decomposed plant debris called duff

Front 14

A horizon

Back 14

decomposed organic matter called humus

Front 15

O and A horizon

Back 15

inhabited by bacteria and algae, microorganisms become responsible for breaking down organic matter into CO2 and H2O. Dark colored

Front 16

E horizon

Back 16

Lighter colored due to some minerals becoming dissolved and leaching

Front 17

B horizon

Back 17

Minerals that were previously dissolved become deposited. The color becomes the color of the dominate mineral

Front 18

C Horizon

Back 18

Little change, turns into weather parent material

Front 19

R horizon

Back 19

Turns into unweathered parent material

Front 20

Parent material

Back 20

geologic material in which the soil forms. Can be either unconsolidated sediment or bedrock

Front 21

What is the parent material for oshkosh loam soil?

Back 21

clay

Front 22

3 major elements for plant growth

Back 22

nitrogen, phosphorus, potassium

Front 23

what does Ph of a soil measure

Back 23

degree of acidity or alkalinity of a water solution

Front 24

acidic

Back 24

Ph=4-6.9

Front 25

Neutral

Back 25

Ph=7

Front 26

basic (alkaline

Back 26

Ph=7.1-10