soil Flashcards
weathering is the
____
how
the ohysical breakdown and chemical alteration of rock on earths surface
chemical weathering
alters the chemistry of rocks and minerals
physical weathering
physical breakdown of earth
dwhen some rocks are more susceptible tp 2weathering than others it is called
(mushroom shape rock)
differential westhering
frosst wedging
can clay also frost wedge?
water gets into rock cracks
it freezes and widens the cracks due to expansion when h20 freezes
yes, esp in htown
what happens to surface area when a rock weathers more?
how to calc surface area?
of units x sides x
surface area inc
#of cubes
realtionship btw phys and che weathering?
inc in phys weathering= more exposed surface area, chemicals seep on surface area, it weathers mroe and cycle repeats
root wedging
roots grow seaching for water in soil thus weatherign rocks
exfoliation dome process?
igneous rock forms in the crust and weathering exposes the rock to the surface by breaking of SHEETS of it like an onion
where does soil come from/ composition?
45% rock materal 55 water process and animal matter
soil profies
what are they?
what are factos consistant in this?
composition of soil ins a specific area
munsell color chart
threee main crops in hosuton
cotton
sorgon
sugarbeets
o horizion
organic mattial, mostly plant materia