Weathering & Erosion
Blue foldable
• Outside: Weathering
• Inside: The break down of rock into
smaller and smaller pieces
– Forms sediment
– Happens to rocks that are not moving
Blue: Two Flaps
• Chemical
• Mechanical or
physical
Blue flap: Mechanical or
Physical Weathering
• Inside:
– Breakdown of rock by physical means
– Just changes the look of the rock
Blue flap: Chemical
Weathering
• Inside:
– Breakdown of rock by chemical means
– Forms a new substance
Green foldable:
• Outside: Agents of Mechanical Weathering
• Inside on flaps:
–
–
–
–
–
–
Ice
Wind
Water
Gravity
Plants
Animals
On inside of Agents of
weathering foldable
• Abrasion: rocks grind against each
other and wear away their surface
– Rocks rub together in streams
– Chalk on chalkboard
• Ice:
– inside: Ice wedging: water freezes in
cracks. When it expands, the crack gets
bigger.
• Wind:
– Inside: wind forces rocks into each other
• Water:
– Inside: rivers and streams roll rocks into
each other
• Gravity:
– Inside: gravity pulls rocks down into each
other
• Ex: rock slide
• Plants:
– Inside: roots break apart rock
• Animals:
– Inside: Animals that dig break apart rocks
Pink foldable:
• Outside: Agents of Chemical
Weathering
• Inside on flaps:
– Water
– Acid rain
– Lichens
– Air
• Water:
– Inside: water can eat away certain types of rocks
& minerals
• Acid rain:
– Inside: acids in rain causes rocks to change
• Lichens:
– Inside: plants that give off acid & eat away rocks
• Air:
– Inside: air causes oxidation
– Oxidation: oxygen in air react with another
element to form an oxide
• Creates rust
Gold foldable
• Outside: Differential weathering
• Inside: Process where softer, less
weather resistant rocks wears away
leaving harder rock behind.
Yellow Foldable
• Outside: 4 things that affect the rate of
weathering
• Inside on flaps:
– Hardness of rock
– Surface area exposed
– Climate
– Elevation
• Hardness of rock:
– Inside: harder rocks weather slower than soft
rocks
• Surface area exposed:
– Inside: smaller rocks weather faster than larger
rocks
• Climate:
– Inside: oxidation occurs more in warm, wet
climates
• Elevation:
– Inside: rocks at higher elevations are exposed to
more water and wind -> more weathering
– Steeper mountains cause more weathering
Purple Foldable:
• Outside on 1st flap: Erosion
– Inside: the transport of sediments from
one place to another
• Outside on 2nd flap: Deposition
-Inside: when sediments are dropped off
White Foldable:
• Outside: Agents of Erosion & Deposition
• On flaps:
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–
–
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Water
Wind
Ice
Gravity
Water:
Inside: moves sand &small rocks and deposits them
in a new location
Wind:
Inside: moves sand and small rocks and deposits
them in new locations
Ice:
Inside: Ice moves sand and all kinds of rocks to new
locations
Gravity:
Inside: sediments move downhill
Salmon Foldable:
• Outside: Landforms created by weathering, erosion,
& deposition
Inside labels:
- Green = wind
- Pink = Gravity
- Yellow = Ice
- Blue = Waves
Landforms made by wind
• Sand Dunes
Landforms made by Gravity:
rock falls, landslides
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
• Landforms made by Ice:
Glue in whole white picture
Landforms created by
waves
• Sea stack
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TIFF (Uncompressed) decompressor
are needed to see this picture.
Sea arch
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• Beaches
• Sandbars
• Barrier spit
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are needed to s ee this pict ure.
QuickTime™ and a
TIFF (Uncompressed) decompressor
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• Sea cliff
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• Wave cut terrace
• Headlands
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are needed to see this pictur e.
Quick Time™ an d a
TIFF ( Un compr ess ed) de compr ess or
ar e n eed ed to s ee this pic ture .
Quick Time™ an d a
TIFF ( Un compr ess ed) de compr ess or
ar e n eed ed to s ee this pic ture .
Qui ckTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this pictur e.