Transcript WeatheringandErosion2

The Earth’s surface is always
changing!
The breakdown of the Earth’s crust into smaller
pieces.
What evidence of
weathering do you see
in this picture?
Why wasn’t this mass
of land weathered
away?
What evidence of
weathering do you see
in this picture?
Describe how ice/heat
cause weathering?
• PAMUKKALE, WHICH MEANS "COTTON
CASTLE" IN TURKISH, IS FOUND IN THE
MOUNTAINS OF TURKEY. IT MAY
RESEMBLE A GLACIER, BUT THE SITE IS
ACTUALLY BATHED IN HOT WATER.
THE MINERAL-RICH WATERS OF THE
AREA'S HOT SPRINGS HAVE OVER TIME
FORMED DAZZLING WHITE LIMESTONE
TERRACES.
The process of water, ice, wind or gravity
moving fragments of rock and soil.
What evidence of
erosion do you see in
this picture?
 Erosion
carves
the Earth's
surface creating
canyons, gorges,
and even
beaches.
What do you think has caused
this rock to look this way?
As the wind
blows it picks
up small
particles of
sand/sediment
and blasts large
rocks with the
abrasive
particles, cutting
and shaping the
rock.

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1)
2)
runoff, rivers and, streams
3)
This simple animation provides
you with a visualization of how the
Colorado River has "downcut"
into the rock layers of the Grand
Canyon.
Canyons are large
valleys created by a
river or stream.
How long it took to carve the
Grand Canyon is debated by
geologists.
Some estimates are between 6
and 8 million years,
which is very recent by
comparison.
Glaciers wear down the
landscape; by picking up and
carrying debris that moves
across the land along with
the ice.
Glaciers can pick up and carry sediment
that ranges in size from
sand grains to boulders bigger than homes !!!
Moving like a conveyor belt and a bulldozer, a single
glacier can move millions of tons of material!
THE SAILING STONES
OF THE RACETRACK
PLAYA IN DEATH
VALLEY
Creep, Slump, Landslides, Mudslides, and Avalanches.
Slower
Faster
These are examples of mass movement
(or called mass wasting)
Rock particles that are picked up and transported
during erosion will ultimately be deposited
somewhere else

Together, Erosion and Deposition build new
landforms.
 Deltas
 Canyons
 Meanders
 Floodplains
Where rivers meet the
ocean is called the
mouth of the river.
 Soil and dirt carried by
these rivers is deposited
at the mouth, and new
land is formed.
 The new, soil-rich land
is known as a Delta

delta – a fan shaped depositional
feature, formed when a load
filled stream/river slows, as it
enters a larger body of water.
alluvial fan – a fan shaped
depositional feature, formed
when a fast moving mountain
stream flows onto a flat plain.
Meandering streams wander side to side as they
constantly seek out the lowest elevation.
This constant motion creates a series of S-shaped
“loops”.
flood plain – the area along a
river that contains rich, fertile
soil due to periodic overflow
from a stream/river.
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First, Remember:
Weathering is the breaking of a rocks into
smaller pieces.
Erosion is the movement of those pieces
from one place to another!
Now Let’s Experiment!
Make sure your name is on your lab paper.
8 min per station, 3 stations.
Turn it in for your application assessment on
weathering.

http://www.youtube.com/watch?v=ZNJe6hrd
L3M&feature=youtube_gdata_player
1)Wave Action
2)Wind Erosion
3)River Action
4)Elevation of Land
5)Effects of Vegetation