ch27.1 27.2 Flashcards
the prosecess that invloves chemical or phiscial braek down of the earths crust
Weathering
a misture of weathered rock organic matter water and air that is capable of supporting plant life
soil
as rocks weather erosional agents like water ice wind gravity
sediment transport
is the removal of surface material through the proccess of weathering
erosion
when ersoin agents drop materail off indifferent places
deposition
the land area that gathers water for a major river
drainage basin
the movement of water parallel to the shore line
longshore current
what is weathering
the break down of materials on earths surface
do rocks weather at the same rate
no different
what are the two main factors that determine how fast a rock will weather
location and tempeture
what are the two types of weathering
mechanical weathering and chemical weathering
what type of change happens with mechamical weathering
breaks rock into smaller pieces
what type of change happens with chemical weathering
chemical reactions to form new minerals
what are the three types of mechanical weathering
frost wedging biological
what causes frost wedging
water gets in crack, freezes, and expands
what cycle is called during frost wedging
freeze thaw cycling
what causes biological activity
what causes weathering during collisions
wind, water, ice, plants, gravity,
what is soil
is a natural resource that can be categorised into different soil types
what is parent material
the geologic material from which soil horizons form
what are soil horizons
A soil horizon is a layer parallel to the soil surface
how many soil horizons are there
three
true or false all soils contain every soil horizon
true
what are the specific soil horizon
surface horizon A, the subsoil B, and the substratum C
