Erosion

Report
9.17 WARM UP
• What is the difference between weathering and
erosion?
Announcements:
-Test Grades are in – you may check at home to see
what your grade is – not right now
-Quiz Fri: Identifying rocks/minerals; weathering
types, erosion types & relative dating
-Science Fair: Due Friday
Test Results
• Written Test:
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Range: 50%-100%
Avg: high 80’s
How many missed is on back page (ex: -4)
35 questions total
• Skills Test:
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Range 60-97 %
Avg: low 80’s
Added 1 pt due to confusing question
Score is on last page circled
• Both tests are each worth 100 pts (2 separate test scores)
Learning Goal: Structure of the
Earth
4 – I can give examples of places that have
the FRAPA LOWCA
3 – I can explain what FRAPA LOWCA is
2 – I know some examples weathering and
erosion
1 - I need to review W & E
Changes to the Earth’s surface
Weathering
Erosion
• Breaks down rocks into
smaller pieces
• 2 types
• Removes the rock
particles
• WWGM
– FRAPA
– LOWCA
Weathering
Erosion
• Mechanical Weathering (FRAPA)
– Freezing
& Thawing
F
– Release
of pressure
R
– Animal
Actions
A
– Plant
P Growth
– Abrasion
A
• Chemical Weathering (LOWCA)
– Living
Organisms
L
– Oxygen
O
– Water
W
– Carbon
Dioxide
C
– Acid
A Rain
– Examples
Erosion  moves rock particles
• Sediment = rock particles
• Deposition = when sediment is laid
down/deposited from erosion
• Deposition
Landform
Deposition
Erosion
Weathering
Sediment
Erosion  moves rock particles
• Sediment = rock particles
• Deposition = when sediment is laid
down/deposited from erosion
• Examples: WWGM – “What would G-ma make?”
– Wind 
– Water (runoff, rivers, waves)
– Glaciers
– Mass Movement
• (landslides, mudflows, slumps and creeps)
Wind Erosion – wind carrying sediment
Water Erosion – waves, rivers,
streams, waterfalls
• wave erosion
• glaciers
Glaciers
Mass Movement Examples - gravity
•
•
•
•
•
Mudslide
Landslide
Creeps & Slumps
Avalanches
US
Landform
Deposition
Erosion
Weathering
Sediment

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