Name:_____________________________ Period:____ Date:_______
Weathering:
 _______________________________ – the mechanical (physical) or chemical
breakup of rocks
– ________________________ = breaks the physical rock down
– ________________________ = break down the bonds holding the rocks
together
The Four Types of Mechanical Weathering:
1. ______________________________________ = water goes into fractures in rock and
freezes, the force of expansion is great enough to break the rock into smaller pieces.
2. Abrasion
– ______________________________________
– ______________________________________
What causes abrasion?
- Water, wind, ice, and gravity
3. _____________________________________ = sheets of rock peel away
4. Root Action
– ______________________________________
– ______________________________________
The Four Types of Chemical Weathering:
1. __________________________________ - chemical reaction with oxygen and
iron bearing substances. Causes rocks to ______________________
 iron-rich rock have reddish stains from "rusting" due to iron and oxygen reacting
2. ___________________________________ __________________________________________________________________
_________________________________
3. _________________________________ – called lichens produce
_________________________________________________________ that can
break down rock.
4. ___________________________________ - sulfur from cars and coal/oil mix with
water to produce ___________________________________.
-
How does the Environment affect weathering?

o

o
o
How does the rock influence weathering?:


o
Erosion –
Forces of Erosion –




Water Erosion –

o

o
Changes the Land –

Often creates
o
o
o