WEATHERING CORNELL NOTES
Name: ____________________ Period: __
MAIN TOPICS
NOTES
1. Natural
Processes
Weathering, erosion and deposition act together in a cycle that wears
down and builds up Earth’s surface.
A. Weathering –
B. Erosion –
C. Deposition –
2. Mechanical
Weathering
Rocks are broken into pieces by natural forces
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•
•
•
•
•
•
__________________
__________________ (freezing and thawing)
____________ (massive ice flows scrape and carve)
____________ (wind/grinding)
______________ (plants)
___________________ (digging)
______________ (release of pressure)
Rocks are weakened due to a change in mineral composition
3. Chemical
Weathering
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•
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_________ (natural solvent)
__________ (pollutants)
_____________ (oxidation = rust)
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4. RATES of
weathering are
affected by:
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•
•
•
__________________ (plant roots and lichens produce weak
acids)
__________ (warm / rainy = fast)
______________
______________
____________ (steepness)
Why did Cleopatra’s Needle weather faster in New York City than it
would have in Egypt?
Summary/Reflection: