Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch 2
L 1-3
| Term | Definition |
|---|---|
| unaformatitarianism | The geologic priciple that the same geologic processes that operate today operated in the past` |
| erosion | the process by which water, ice, wind, or gravity moves weathered particles of rock and soil |
| weathering | the chemical and physical processes that break down rock and other substances |
| mechanical weathering | the thype of erosion where a rock is physically broken into smaller pecies |
| chemical weathering | The process that breaks down rock throught chemical changes |
| abrasion | the grinding away of a rock by other rock particles carried in water ice or wind |
| frost wedging | Processes that splits rock when water seeps into cracks then freezes and expands |
| oxidation | a chemical change in which a substance combines with oxygen as when iron oxidizes forming dust |
| permeable | Charachteristic of a material that contains connected air spaces or pores that water can seep through esaly |
| soil | the loose weathered material on Earth's surface in which plants can grow |
| bedrock | rock that makes up earths crust also the solid rock layer beaneath 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 expresses the concetration 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 sop most layer of soil made up of clay and other materials and humus |
| subsoil | the layers of soil below topsoil that has plant and animal matter than topsoil contains mostly and other materials |
| decomposer | an organism that gets energy by breaking down wastes and dead organisms and returns rawmaterial to the soil and water |
| natural resource | anything naturally occurring on the environment that humans use |
| soil conservation | the management of soil to reduce its destruction |
| crop rotation | the planting of defferent crops in a feild each year to maintain the soils ferility |
| contour plowing | plowing fields 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 crop are plowed into the ground |
Created by:
avitale036