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.


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!
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”.
Stream Velocity varies from one side to the other side
of the “S”, resulting in erosion in some places and
deposition of sediments in others.


Floodplains form along
the banks of midorder streams and
larger rivers.
These are low-lying
areas along the sides
of a river channel that
have regular times of
heavy waterflow to
cause the river to spill
over and flood the
land.
Why do farmers like to
plant along
floodplains?
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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!
Deposition is the resting spot of where
sediment settles.
Now Let’s Review with a Partner! Dirty Words
vocab sheet or your IAN notes & half sheets.

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