Shared Flashcard Set

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mrs.willging
study cards
13
Science
6th Grade
02/18/2009

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Term
erosion
Definition
when sediments are moved
Term
abrasion
Definition
the grining and weathering of rock suface
Term
oxidation
Definition
oxidation is when iron and oxygen combines and creates oxidation
Term
chemical weathering
Definition
rocks break down of a result of chemical weathering
Term
acid rain
Definition
the acid weakens the bonds between minerals in rock
Term
soil conservation
Definition
this is a farming method that helps soil from being eroded such as crop rotation, no farm tilling, ect.
Term
freeze-thaw
Definition
when rain gets into cracks and freezes and puts a crack i the rock or side walk
Term
physical weathering
Definition
broken down rock into similar pieces by physical means
Term
cover crop
Definition
when a crop gets covered by snow ice and ect.
Term
contour plowing
Definition
a serten angle that farmers use so the soil will not wash away
Term
terracing
Definition
leveled surface
Term
no till farming
Definition
this is when you don't till the whole entire farm land only the lines you put seeds in
Term
crop rotation
Definition
when grow different crops every year
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