Upgrade to remove ads
Only $35.99/year

Unit Four Test Review - Weathering

Terms in this set (61)

What part of the water cycle is not affected by gravity?
Evaporation
Name the four processes of the water cycle.
Precipitation, Transpiration, Evaporation, and Condensation
What is the source of energy for the Water Cycle?
The sun
What are the two types of weathering?
Mechanical and Chemical
What is Mechanical Weathering?
A process where rocks break down into smaller pieces by a physical means.
What is Chemical Weathering?
The process by which rock is broken down because of chemical interactions with the environment.
How do waves and water mechanically weather rocks?
Waves break and weather shorelines
How does wind mechanically weather rocks?
Wind blows sand and silt against exposed rocks
How does ice wedging mechanically weather rocks?
Rocks break because water expands when it freezes.
How does gravity mechanically weather rocks?
Landslides and avalanches expose new surfaces for further weathering and falling rocks break up other rocks.
How does root wedging mechanically weather rocks?
Plants send out roots for nutrients. These roots can move into smaller spaces and cracks. They eventually grow and can slit the rock apart.
How does animal burrowing mechanical weather rocks?
Animals dig holes and expose new rocks to the effects of weathering. The holes allow water and other weathering agents to reach the rock layer.
What is abrasion?
The collision of rocks results in breaking and weathering away of rock.
What is exfoliation?
Rock breaks into curved sheets that peel away from underlying rock.
Over time, what happens to a rock as it weathers?
Its edges go from angular to rounded.
Sets with similar terms