Gradation

describe the features and processes associated with weathering and mass wasting

Outcome C

Outcome C Weatheringhttp://www.youtube.com/watch?v=lyysL02ZvQ8

Physical Weathering-

Chemical Weathering-

Physical Weathering-Outcome C-1Frost Shatter

Formative Task 1Read Page 38..

Draw a labelled illustration of each type of Physical Weathering.

Outcome C-2-Chemical WeatheringInvolves the decay of rock so that the chemical composition of the rock is

changed...

Processes..Solution--- As rain droplets pass through the atmosphere they absorb CO2 and

form a mild acid called Carbonic acid..

This acid rain will dissolve rock like limestone...

Solution

HydrolysisCarbonic acid works on minerals called silicates.

Ions of water replace ions of silicate and the dissolved minerals are carried away in the water..

Eg. Water-- Through coffee grounds..

OxidationOxygen dissoved in water can change iron into iron oxide. As water comes in

contact with the iron oxide, it disolves it and carries it away... A red rust stain on rocks is an indication that oxidation is taking place..

vIDEO-- Chemical Weathering..http://www.youtube.com/watch?v=P8oWj3PVK9E

Weathering Vs. ErosionRemember that weathering is the breakup of rock...

Erosion means both breakup and transportation..

Formative Task 1 Draw out an label examples of each in your notebook..

Write out the steps and colour as well...

Identify and Describe Process

Chemical vs Physical

Type of Chemical or Physical

Process - Three Steps

Outcome C-3-

describe features and processes associated with mass wasting

Causes of Mass Wasting..

Natural Causes:

1.Adding Water-expands soil and reduces stability.2. Freeze/thaw in winter reduces soil stability..

Human Cause1. Logging- Destabalizes slopes.2.Urbanization

Solutions:From page 40(Geo 12 workkbook)identify 8 techniques used to stabalize

slopes so that Mass Wasting does not occur...

Types and Processes of Mass WastingFrom Pg 41 (geo 12 Workbook)

Identify and describe the process for each of the seven types of Mass Wasting...

Use a diagram to demonstrate your understanding of each...

Rubric for Diagram/Process Exp..4- Includes detailed- 7 labelled drawings, includes at least a 5 step detailed

process for each.3-Includes detailed at least 5 labelled drawing, includes at least a 5 step

detailed process2-Includes a detailed of 4 labelled drawing, includes at least a 4 step detailed

process1-Includes detailed all 2labelled drawing, includes at least a 5 step detailed

process

Outcome C Identify and describe processes associated with.....running water (e.g., stages of fluvial development, methods of sediment transport, abrasion, hydraulic action, vertical erosion, lateral erosion, headward erosion)– ground water (e.g., solution)– glaciation (e.g., plucking, abrasion)– wind (e.g., deflation, abrasion)– waves (e.g., longshore drift, abrasio

i

identify the erosional and depositional features associated with– running water (e.g., meander, oxbow lake, levee, flood plain, delta, drainage pattern, alluvial fan, playa)– ground water and Karst topography (e.g., sink hole, stalactite, stalagmite, artesian well, aquifer)– glaciation (e.g., cirque, arête, horn, truncated spur, hanging valley, roche moutonnée, crag and tail, drumlin, kettle lake, moraine, tarn, esker)– wind (e.g., barchan, loess, mesa, butte, hamada)– waves (e.g., headland, stack, spit, bar, tombolo)

Outcome C-4 Identify/Describe Drainage BasinsUsing Googe Earth Find the following Locations and Identify the type of

Drainage Patterns

Mt RainierBella Colla B.C- river that flows beside the town.

Fayettville North Carolina

Dendritic Pattern

Radial Pattern

Trellis Pattern

Outcome C 5- Identify Stages/Describe River Development Outcome C5

Youthful

Mature

Old Age River

River Stages- Identify-Google EarthGo to Mount Robson Visitor Centre- Find Picture nearby of Fraser River

Headwaters..

Go to Mission B.C. find the Fraser River identify the river stage.Go to Hells Gate BC- Identify the River StageFind at least 3 other rivers and identify the stage they are at...

C-6 Identify/Describe 4 Erosional Processes of Rivers C-6

1. Hydraulic Action2.Abrasion3.Attrition4. Collision

Define each one-Draw a picture.

C7.Identify/Describe Erosional/Transportation

1. Solution2, Suspension3. Saltation4. Traction

Define each one- Draw a picture..

Google Earth Tours.You will create a google earth tour:

You will need to identify the features and processes forming the featues of one of the following areas:

1. Pg 44- 46-Upland/Lowland Rivers Eg. Fraser2.Pg. 49- 54- Alpine/Cont. Glaciation Eg Mount Robson. (Berg Lake)3. Pg. 54-57 Coastal Landforms (Eg. Oregon Coast)

Google Earth Tours4. Pg. 58-60- Groundwater--5. Pg. 60-64 -Desert Landscapes..

C-8 identify/Describe Formation of Upland/Lowland River Features- C8Upland

Process- Vertical Erosion dominates as gradients are steep.

Features: Water Falls, Gorges,Canyons, Boulders, Potholes,.

Lowland FeaturesProcess-river has reached an elevation close to sea level. Energy used is

lateral not vertical.

Features- Flood plains, meanders,undercuts,point bars, slip off slope,levees,dikes, oxbow lakes, river terraces,braided channels, river deltas.(arcuate delta,birds foot delta,and estuarine delta..

C 9- Identify Features and Formation Process of Alpine GlaciersProcess- Formation

Accumulation, abalation,formation

Erosion Actions(Processes)Plucking,Abrasion,Deposition,Till and Outwash

C-9 Continued.Identify Erosional Feature and Describe Process

Cirque,Tarn, Arete,Col,Horn,Striations,Ground Moraine,Lateral Moraine,Medial Moraine,Termianl Moraine, Pro Glacial Lake,Snout, Recessional Moraine, Esker, Truncated Spurs, Hanging Valleys, Crevasses, Icefall, Glacial Lakes,

C-10 Identify Coastal Landforms and Formation ProcessErosional Actions- DescribeWaves, Wave Action, Wave Refraction,

Coastal Erosion: DescribeCorrosion,Corrasion,Attrition, Hydraulic Action,

Undercutting,swash,backwash,longshore drift.

Identify Features and Describe Formation of:caves,bay, headlands,tunnel,arch stacks,

C-10 Coastland Formswave-cut platforms, spits, tombolos groyens, estuaries,rias,fiords.

C11- GroundWater/Karst LandscapesCovered in Class

C 12- Identify Wind/Desert Features and Formation ProcessesFactors causing Desert Formation:Latitude,Mountains,Currents,Ocean Influence.

Wind Erosion:

Suspension,Saltation,Deflation,

Features:Identify/Describe Formation Toadstools,blowouts,oases,aquifer

C-12 ContinuedWater Erosion- Identify /Describe

Water Erosion Feature-Alluvial Fan, bajjadas,wadis, playa lakes,canyons,

Other Features: Identify and Describe..Dunes, leeward, slip face, transverse dune,barchan dune,parabolic

dune,longitudinal dune, plateaus, mesa, buttes, hamadas,bolson.

Rubric For Google Earth Tour1. You must identify and describe the formation process for each feature you

demonstrate on google earth...

For example if you are Marking- Terminal Moraine for an Alpine Glacier- You must correctly identify it as such and then describe in detail the process for its formation. Most of the this information is found in your two textbooks...

Rubric4. Formation description is extremely detailed and includes all possible steps

required for this feature and your project includes all features mentioned. All features are correctly identified.

3. Formation description is detailed and includes most steps required for the formation of this feature. Your project includes at least