chapter 27.1 Flashcards
weathering definition
the process that involves the physical or chemical breakdown
do rocks weather at the same rate?
no
what are the two main factors that determine how fast a rock will weather?
rock type and landscape
what are two types of weathering?
chemical and physical
what type of change happends with mechanical weathering?
frost wedging,biological activity,and collision
what type of change happends with chemical weathering
what are the 3 specific types of mechanical weathering?
what causes frost wedging?
what is the cycle called during frost welding?
what caused weathering during collisions?
rocks slides
soil definition
what is parent materials?
what soil is made from
what are the 2 types of chemical weathering caused by?
oxegyn and water
what is the chemical process called that is caused by oxygen?
oxidation
what is the chemical process caused by water?
hydrolysis
what are in soil horizons?
the different layers of soil
how many soil horizons are there?
6 layers
true or false.all soils contain every soil horizon
false
what are the spesific soil horizons?
o,a,e,b,c,and r
what does the first soil horizon contain?
organic matertial
what is the second horizon mostly made up of?
mostly minerals
which layer does leaching occur?
horizon e
which horizon collects matertials from previous horizons?
horizon b
which layer is partially weathering bedrock?
horizon r
which layer is partially weathered bedrock?
horizon c
which layer is unweathered bedrock?
which soil horizons make up the topsoil?
which soil horizons make up the subsoil?
what are the two types of glaciers?
valley glacier and continetal glacier
where do valley glaciers form?
in high mountain regions
where do continental glaciers form?
colder climates
where are two continetal glaciers located?
one in greenland and one in antartica
what is a cirque?
a bowl shaped basin
what is an arete?
when you have two adjacent valley glaciers meet and erode a long sharp ridge line
what is a horn in mountainous region?
sharpened peak tip of mountain
what shape of valley do valley glaciers form?
u shaped
what are tributary glaciers?
small glaciers that feed into the large glaciers
what type of valleys do tributary glaciers form?
