Shared Flashcard Set

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enwmbv
chaoter 5 survey
20
Environmental Studies
9th Grade
03/12/2013

Additional Environmental Studies Flashcards

 


 

Cards

Term
when does mechanical weathering occur?
Definition
when physical forces break rocks into smaller and smaller pieces without changing the rock's mineral composition.
Term
name the three physical processes that cause mechanical weathering?
Definition
frost wedging,unloading and biological activity.
Term
describe frost wedging?
Definition
frost weding is most common in mountains regions in the middle latitudes. here daily freezing and having often occur.
Term
slabs of outer rock separate like the layer of an onion and breaks loose in a process called?
Definition
exfoliation
Term
what is meant by biological activity?
Definition
the activities of organism,including plants,burrowing animals,and humans,can cause mechanical.
Term
explain chemicals weathering?
Definition
transformation of rocks into one or more new compounds.
Term
________ is the most important agent of chemical weathering .
Definition
water
Term
can chemicals weathering change the physical shape of a rock?
Definition
yes
Term
what two factors affect the rate of weathering?
Definition
characteristic and climates
Term
give an example of a rock characteristic.
Definition
grave stones
Term
what is regolith?
Definition
weather produces a layer of rock and minerals fragments
Term
name 4 major components of soil.
Definition
water and air, mineral matter, organic matter
Term
what are the most important factors in soil formation?
Definition
parent material, time, climate,organisms and slope
Term
soil varies in composition,__________,_________,_________ and at different depths.
Definition
soil varies in composition, texture, structure, and in formation at different depths.
Term
what are the three common types of soil?
Definition
Pedalfer,Pedocsl,and Paterite
Term
how do human activities affect rates of erosion?
Definition
remove natural vegetation, such as family,bagging, and construction, have greatly acceverated erosion
Term
what is mass movements?
Definition
Term
how do geologists classify mass movements?
Definition
Term
when does rock fall occur?
Definition
Term
how does mudflows differ from earth flows?
Definition
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