Science Quiz / Ch 2 Weathering and Soil Formation

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Can you name the Ch 2 Weathering and Soil Formation?

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DefinitionTerm
type of soil that makes up the B horizon
a crumbly, dark brown soil that makes up the A horizon
The most important factors that determine the rate at which weathering occurs are the type of rock and the _____.
process in which organisms that live in soil turn dead organic material into humus
process in which iron combines with oxygen in the presence of water
a dark-colored substance that forms as plant and animal remains decay
farmers disturb the soil and its plant cover as little as possible
the process that breaks down rock and other substances at Earth's surface
the most important cause of chemical weathering
the smallest soil particles
the organisms that break the remains of dead organisms into smaller pieces
soil that is made up of about equal parts of clay, sand, and silt
Does weathering occur faster in wet or dry climates?
type of weathering that breaks down rock through chemical changes
the largest soil particles
process that splits rock when water seeps into cracks, then freezes and expands
DefinitionTerm
Does weathering occur faster at higher or lower temperatures?
the grinding away of rock by rock particles carried by water, ice, wind, or gravity
the loose, weathered material on Earth's surface in which plants can grom
type of weathering in which rock is physically broken into smaller pieces of rock that have the same composition as the rock they came from
scientist who developed new crops and farming methods that helped to restore soil fertility in the South
type of soil conservation where a farmer plants different crops in a field each year
this is produced when oxidation occurs
farmers plow their fields along the curves of a slope
one of Earth's most valuable natural resources
the removal of rock particles by wind, water, ice, or gravity
the area of the Great Plains where wind erosion caused soil loss during the 1930s
the management of soil to prevent its destruction
anything in the environment that humans use
the solid layer of rock beneath the soil
Does humus have a high or low fertility?

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