Today in Geography we reviewed weathering and focussed in on Karst Landscapes. We completed a sheet on the crash course video linked below for review and new and then took notes on Karst Topography and watched a couple of other videos. We started to discuss our field reports and will start those this week.
https://www.youtube.com/watch?v=pmF41T52nJs&t=660s
https://www.youtube.com/watch?v=XMgattdqc_I&t=327s
https://www.youtube.com/watch?v=Hc-7vJz0nuA
Monday was a holiday but on Tuesday we finished up River Systems. We took notes on drainage patterns and stages of River development. We also watched these videos:
https://www.youtube.com/watch?v=8a3r-cG8Wic
https://www.youtube.com/watch?v=CDEj62HGNkk (crash course)
https://www.youtube.com/watch?v=ewJimXu3ZLo
1. What are the four ways that a river erodes a landscape?
Erosion happens via Abrasion, Attrition, Hydraulic Action & Solution
2. Define/explain one of these erosional forces.
Abrasion: causes river bed to become deeper through the action of scraping or wearing away
Attrition: stones and rocks knock together breaking into smaller particles so the bedload is breaking itself apart or by hitting the bed
Hydraulic Action: the ability of moving water to dislodge and transport rock particles, breaking up the banks
Solution: Water dissolved soluble materials
3. List two ways humans try to manage river flow?
Dams, reservoirs, levees, dykes, hydroelectric power stations, dredging
4. List two depositional landforms a river creates.
Alluvial Fan, delta, braided channel, oxbow lake, flood plain, sand/point bar, natural levee
5. What are the two ends of a river called?
source- the start
mouth - end
Today in Geography 12 we wrote a Friday 5. From here the class got a view of what their current mark is in Geography these are posted on the board. They are missing your connections models on the spheres, today's Friday 5 and your test corrections. Hopefully another update next week.
There was some time to ensure each group member had all the data from the river study to date. Hopefully we are heading to the Pass on Wednesday to gather the last of the data for the river study.
From here we worked on the River Systems Review sheet and watched these two videos:
https://www.youtube.com/watch?v=8EIoBao-UvI
https://www.youtube.com/watch?v=3YdEkegvJCQ
-Test has been moved to either Wed or Fri next week. (14/16th depending on if we are at the Pass or not).
-On Tuesday I will review old vs young rivers and drainage patterns which should finish up the section.
Have a great long weekend!
Test date: October 10, Friday
Earth Matters pp.116-118, 185-193
Be ready to define and give an example of some of the following vocabulary:
tributary drainage patterns flood plain waterfall
erosion undercutting meander v-shaped valley
levee delta estuary gorges/canyons
oxbow lake alluvial fan flow velocity potholes/watermills
solution suspension traction dredging
saltation sediment transport hydraulic action watershed
abrasion attrition dam. mouth. source
***Be able to differentiate between erosional and depositional features in a river system.
Know the drainage patterns! I didn't add to the vocab...but know them!
Know the stages of river development and what sort of evidence there is to support what stage of development a
river is in.
Be able to describe and draw a diagram showing the processes of erosion.
Be ready to label diagrams of river systems.
Know the different components of a river system.
Be able to associate the features of a river system to what we have seen in our field work.
Understand the human impacts on river systems
After some catching up from me being away here is where we are at:
IMPORTANT UPCOMING Dates:
Wed Oct. 7 - field work on Illecillewaet River.
Tuesday Oct. 13: test River Systems
Wed. Oct. 14: Field work: Rogers Pass (back at lunch)
Monday: we started our connections model presentations, talked about rivers as agents of gradation. We talked about erosion and transportation.
Erosion happens via Abrasion, Attrition, Hydraulic Action & Solution
Abrasion: causes river bed to become deeper through the action of scraping or wearing away
Attrition: stones and rocks knock together breaking into smaller particles so the bedload is breaking itself apart or by hitting the bed
Hydraulic Action: the ability of moving water to dislodge and transport rock particles, breaking up the banks
Solution: Water dissolved soluble materials
On Tuesday we went over and corrected our glaciation tests. Did some review of the above and talked about River Deposition. We also continued on with presentations of connections models.
Test/Large quiz is on Friday.
Earth Matters Text book pages: 102-103, 132-139
There will be two diagrams to label. There will be some short answer questions. There may be a T/F section where you have to back up your answer.
Understand the terminology and how to apply it.
Understand how glaciation is an agent of gradation.
Be able to describe why a crevasse forms.
Be able to differentiate between erosional and depositional landforms.
Know the following terminology:
