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30_8_14_A_Landforms

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					      Origins of Landforms


Overview of Materials for Landform Activities


Landform Activity


Demos that Accompany this PPT
Origins of Landforms
         TEKS 8.14 (A)


predict land features resulting from gradual
changes such as mountain building, beach
erosion, land subsidence, and continental
drift;
       Learning Objectives

 Identify landforms
 Explain the role of geological structures,
   igneous activity, water, wind, and glaciers in
   the origin of landforms
 Explain how weathering, erosion,
   subsidence, and uplifting create
   landforms
Major Types of Landforms


 Mountains (volcano, fault block mountains)
 Plains (coastal and interior plains)
 Plateau (broad flat areas of land)
Volcano and Fault Block Mountains
Coastal and Interior Plains
Plateau




     Plateau in Albuquerque NM
      Landforms Origins

 Geological structures
 Glaciers
 Igneous activity
 Running water
 Ground water
 Wind
 Waves and currents
     Geological Structures


This is how
mountains,
plains,
plateaus,
canyons,
and mesas
are formed
                  Glaciers

This is how cirques, horns, tarns, finger lakes, U-
shaped valleys, and hanging valleys are formed.
               Igneous Activity

This is how cinder, shield, and composite cone
volcanoes, and calderas, are formed.




Arenal Volcano in Costa Rica
             Running Water

This is how alluvial fans, oxbow lakes, and
meandering streams, are formed.
                   Ground Water

This is how sinkholes and caves are formed.




 Sinkhole at Chichen Itza, Mexico
           Wind

This is how dunes are formed.
       Waves and Currents

This is how headlands, sea arches, sea cliffs and
beaches.
     ENGAGE



 Demonstrate Formation of
Syncline, Anticline, and Faults
   Explore



Landform Models Activity
        Explain

 What are the 3 major types of landforms?
 Describe the origin of at least 5 landforms.
 Predict the effect of weathering, erosion, and
   subsidence on landforms.
            Elaborate

 Landform Coloring Activity.

 Create Edible landforms.
              Evaluate

For each of the following, indicate how the
 landform was created.
1.Sea cliff
2.Fault block mountain
3.Sea arch
4.Cirque
             Evaluate

For each of the following, indicate how the
 landform was created.
5.caldera
6.Oxbow lake
7.sinkhole
8.plateau
             Evaluate

For each of the following, indicate how the
 landform was created.
9. Alluvial Fans
10.volcano
11.caves
12.dunes
             Evaluate

For each of the following, indicate how the
 landform was created.
13. headlands
14.beach
15.Plains
16.Horn
                           Credits

Coastal plains www3.csc.noaa.gov
Great Plains www.worldofstock.com
Volcano www.wahinesurfing.com
Fault block mountain geography.sierra.cc.ca.us
Glaciation www.ufrsd.net
Alluvian fans www.geog.le.ac.uk
Caldera www.alanpalmer.org.uk
Meandering stream muller.lbl.gov
Dunes www.tripalbum.net
Sinkhole www.jopeyer.com
Cave www.utexas.edu
Sea arch http://gpc.edu/~pgore/Earth&Space/landforms.html
Headland mick-armitage.staff.shef.ac.uk
Sea cliff www.picturesofengland.com
Beach www.aloha.com

				
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posted:3/30/2013
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