Shared Flashcard Set

Details

Chapter 5 Survey
n/A
10
Environmental Studies
9th Grade
03/12/2013

Additional Environmental Studies Flashcards

 


 

Cards

Term
When does mechanical weathering occur?
Definition
when physical forces break rock into 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 the frost wedging.
Definition
The mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices
Term
slabs of outer rock separate like the layers of an onion and break loose in a process called.
Definition
exfoliation
Term
what is meant by biological activity?
Definition
the activities of organisms, including plants, burrowing animals, and humans, can also cause mechanical weathering.
Term
explain chemical weathering
Definition
The transformation of rock into one or more new compounds.
Term
______ is the most important agent of chemical weathering.
Definition
water
Term
can chemical weathering change the physical shape of rock?
Definition
Yes
Term
What two factors affect the rate of weathering?
Definition
Characteristics and climate
Term
give an example of a rock characteristic
Definition
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