Transcript The Forces of Weathering and Erosion

Weathering
Weathering
And
And
Erosion
Erosion
The Different Types of Weathering
There are many different types of weathering.
Here are a few:
•Frost Action
• Root Pry/Plant Growth
•Wind Abrasion
•Animals
• Exfoliation
• Acid
•Oxidation from AIR
Frost Action or ice wedging slowly breaks up this
sedimentary rock into unusual shapes.
These rocks have been blasted by wind and sand
causing them to become rounded.
WIND ABRASION
This is a picture of
the Half Dome.
The rock is
peeling away from
the mountain in
layers just like an
onion. This is
exfoliation.
Root Pry
The tree is growing in the
rock and soon the rock
will break apart because
of the tree roots.
Animals
Use the pictures from the text book pg. 300, chose
one of the four on the bottom of the page
Animals burrowing or moving through cracks can
break rock.
1908
to
1969
Acid rain has eaten away this limestone statue.
Acid Rain
This rock is red because of the oxidation of
iron in the sediment when the rock was
being formed.
Erosion
There are many kinds of Erosion.
Here are a few:
Mass Movement:
•Rock Fall
Avalanche
• Wave Action
•Wind Erosion
•Landslides
•Glaciers
•Slump
• Running Water
•Mud Flow
•Creep
Rock Fall
Rapid freefalling, bounding, sliding, or rolling of
This is a picture of a landslide.
A type of mass wasting.
In this picture the land has slumped
into the road below.
Mudflow
A downslope movement of mud
This is a diagram of creep. The hillside
slowly slips over many years from
temperature or water.
Wave action is when waves hit the rocks
and pieces of rock break off.
Wind Erosion
Removal of soil particles by wind
This is a picture of a glacier which carves out a
U-shaped valley where it flows dragging rocks and
boulders along the way.
This is a picture of an avalanche. It is similar to
a landslide with ice and snow instead of rock.
In this picture the running water eroded the sides
of this canyon and created the V-shaped valleys.