12/02/2025 12:01:45
Soils Exam 1with answers
soil
natural entity of unconsolidated organic and inorganic materials in dynamic
equilibrium and serves as a medium for plant growth
T/F: Proper soil management is imperative to improving yields.
True
edaphology
study of soils as they relate to plant growth
pedology
study of soil as a natural body and genesis
horizon
distinct layer that has differing properties
soil profile
all soil layers stacked on top of each other
How much (%) of the soil is minerals and organic matter?
50%
Natural medium for plant growth
soil
3 ways humans depend on soil
Produce food, construction of homes, and disposal of waste
Soil is derived from weathered what?
rocks and minerals
inorganic unconsolidated sediments
physical and chemical decomposition of rocks and minerals
in situ
directly formed from the weathering of rocks
What does a finer sediment mean?
It will have more surface area
parent material
unconsolidated rocks, minerals, and organic matter from which soil developes
mineral
inorganic substances formed from geological processes
quartz
SiO2, most beach sand
rock
two or more minerals
igneous
formed from volcanoes
sedimentary
formed from deposited suspension
cementing agents of sedimentary rock
clay, iron oxides
sandstone
quartz, cementing agents
limestones
generally from ancient sea beds
shale
clay or mudstone
conglomerate
Soils Exam 1with answers
soil
natural entity of unconsolidated organic and inorganic materials in dynamic
equilibrium and serves as a medium for plant growth
T/F: Proper soil management is imperative to improving yields.
True
edaphology
study of soils as they relate to plant growth
pedology
study of soil as a natural body and genesis
horizon
distinct layer that has differing properties
soil profile
all soil layers stacked on top of each other
How much (%) of the soil is minerals and organic matter?
50%
Natural medium for plant growth
soil
3 ways humans depend on soil
Produce food, construction of homes, and disposal of waste
Soil is derived from weathered what?
rocks and minerals
inorganic unconsolidated sediments
physical and chemical decomposition of rocks and minerals
in situ
directly formed from the weathering of rocks
What does a finer sediment mean?
It will have more surface area
parent material
unconsolidated rocks, minerals, and organic matter from which soil developes
mineral
inorganic substances formed from geological processes
quartz
SiO2, most beach sand
rock
two or more minerals
igneous
formed from volcanoes
sedimentary
formed from deposited suspension
cementing agents of sedimentary rock
clay, iron oxides
sandstone
quartz, cementing agents
limestones
generally from ancient sea beds
shale
clay or mudstone
conglomerate
