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
|
|
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
|
|
Term
can chemical weathering change the physical shape of rock? |
|
Definition
|
|
Term
What two factors affect the rate of weathering? |
|
Definition
Characteristics and climate |
|
|
Term
give an example of a rock characteristic |
|
Definition
|
|