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, Ushaped 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