Transcript Weathering & Erosion Foldable

Weathering & Erosion
Foldable
• No notebooks on quiz, but you will be able
to use this foldable
• 6-Door Foldable
– Take 3 pieces of paper
– Offset them 2 inches “hotdog” style
– Fold over to create six “doors”
Weathering
Erosion
Mechanical Weathering
Water: Rivers
Chemical Weathering
Water: Groundwater
Rate of Weathering
Water: Waves
Soil
Water (Ice): Glaciers
Soil Horizons
Wind
Weathering
• Define “weathering”
• Actions: particles created by weathering
are
– Carried away by erosion, or
– Form soil
Mechanical Weathering
• Define “Mechanical Weathering”
• Types (define each)
– Release of pressure
– Freezing and thawing (ice wedging)
– Animal actions
– Plant growth
– Abrasion
Chemical Weathering
• Define “Chemical Weathering”
• Types (define each):
– Water (H2O)
– Oxygen (O2, oxidation)
– Carbon Dioxide (CO2)
– Living organisms
– Acid rain
Rate of Weathering
• Define how each affects rate (speed)
– Surface area
– Type of rock (permeable, nonpermeable)
– Climate
– Human activities
Soil
• Define:
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Soil (what is soil made of?)
Bedrock
Humus
Fertility
Loam
Litter
Decomposers
sod
• How do scientists classify different soil types?
Soil Horizons
• Draw a soil horizon
diagram and define what
is in each layer
– A Horizon
– B Horizon
– C Horizon
– Bedrock (D Horizon)
Erosion
• Define:
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Uniformitarianism
Erosion
Deposition
Gravity
Mass movement
• Landslides, mudflows, rockfalls, slump, creep
• How do weathering, erosion, and deposition interact
(work together)?
• What type of erosion forms a v-shaped valley? What
type forms a u-shaped valley?
Water Erosion: Rivers
• Define:
– Runoff
– River features:
• Rill, gully, stream, tributary, waterfall, flood plain,
valley, meander, oxbow lake, alluvial fan, delta
• Drawing a small river system diagram is a good
idea (but optional)
Water Erosion: Groundwater
• Define:
– Groundwater
– Cave, stalactite, stalagmite
– Karst topography
• Drawing a small cave diagram is a good
idea (but optional)
Water (Ice) Erosion: Glaciers
• Define:
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Two types: continental glacier, valley glacier
Ice age
Plucking
Till
Glacier features: moraine, kettle, cirque, horn, fiord,
arete, drumlin, u-shaped valley, glacial lake
– Drawing a glacier diagram is a good idea (but optional
• How do glaciers form, and then move?
Water Erosion: Waves
• How do ocean/lake waves form?
• How do waves erode the land?
• Define:
– Shore features: headland, wave-cut cliff, sea
stack, sea cave, sea arch, beach, spit,
sandbar, barrier beach
– Longshore drift
Wind Erosion
• How does wind erode land?
• Define:
– Deflation
– Abrasion
– Loess
– Sand dune
– Drawing a diagram of wind erosion is a good
idea (but optional)