The geological principal that the same geologic processes that operate today operated in the past to change Earth's surface.

The process by which water, ice, wind, or gravity moves weathered particles of rock and soil.

The chemical and physical process that break down rock and other substances.

Mechanical Weathering

The type of weathering in which rock is physically broken into smaller pieces.

The process that breaks down rock through chemical changes.

The grinding away of of rock by other rock particles carried in water, ice, or wind.

Process that splits rock when water seeps into cracks, then freezes and expands.

A chemical changes in which a substance combines with oxygen, as when iron oxidizes, forming rust.

Characteristics of a material that contain connect air spaces, or pores, that water can seep through easily,

The loose, weathered material on Earth's surface In which plants can grow.

Rock that makes up Earth's crust; also the solid rock later beneath the soil.

Dark-colored organic material in soil.

A measure of how well soil supports plant growth.

Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.

A range of values used to indicate how acidic or basic a substance is; express the concentration of hydrogen ions In a solution.

A layer of soil that differs in color and texture from the layers above or below it.

The crumbly, topmost layer of soil made up of clay and other minerals and human(nutrients and decaying plant and animal matter).

The layer of soil blow topsoil that has less plant and animal matter than topsoil and contains mostly clay and other minerals.

An organism that gets energy by breaking down wastes and dead organisms, and returns raw materials to the soil and water.

Anything naturally occurring the envoirment that humans use.

The managment of soil to limit its destruction.

The planting of different crops in a field each year to maintain soul's fertility.

Plowing filed along the curves of a slope to prevent soil loss.

Soil conservation method in which weeds and dead stalks from the previous year's crop are plowed into the ground.

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Question	Answer
Uniformitarianism	The geological principal that the same geologic processes that operate today operated in the past to change Earth's surface.
Erosion	The process by which water, ice, wind, or gravity moves weathered particles of rock and soil.
Weathering	The chemical and physical process that break down rock and other substances.
Mechanical Weathering	The type of weathering in which rock is physically broken into smaller pieces.
Chemical Weathering	The process that breaks down rock through chemical changes.
Abrasion	The grinding away of of rock by other rock particles carried in water, ice, or wind.
Frost Wedging	Process that splits rock when water seeps into cracks, then freezes and expands.
Oxidation	A chemical changes in which a substance combines with oxygen, as when iron oxidizes, forming rust.
Permeable	Characteristics of a material that contain connect air spaces, or pores, that water can seep through easily,
Soil	The loose, weathered material on Earth's surface In which plants can grow.
Bedrock	Rock that makes up Earth's crust; also the solid rock later beneath the soil.
Humus	Dark-colored organic material in soil.
Fertility	A measure of how well soil supports plant growth.
Loam	Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
pH scale	A range of values used to indicate how acidic or basic a substance is; express the concentration of hydrogen ions In a solution.
Soil horizon	A layer of soil that differs in color and texture from the layers above or below it.
Topsoil	The crumbly, topmost layer of soil made up of clay and other minerals and human(nutrients and decaying plant and animal matter).
Subsoil	The layer of soil blow topsoil that has less plant and animal matter than topsoil and contains mostly clay and other minerals.
Decomposer	An organism that gets energy by breaking down wastes and dead organisms, and returns raw materials to the soil and water.
Natural Resource	Anything naturally occurring the envoirment that humans use.
Soil conservation	The managment of soil to limit its destruction.
Crop rotation	The planting of different crops in a field each year to maintain soul's fertility.
Contour Plowing	Plowing filed along the curves of a slope to prevent soil loss.
Conservation Plowing	Soil conservation method in which weeds and dead stalks from the previous year's crop are plowed into the ground.

Created by: ebutterfield005

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