Lesson 4A: Erosion and Deposition
Estimated Time: One forty-five minute class period
Indicator(s): Core Learning Goal 1
1.2.3 The student will formulate a working hypothesis.
1.2.7 The student will use relationships discovered in the lab to explain phenomena observed outside the laboratory.
1.5.2 The student will explain scientific concepts and processes through drawing, writing, and/or oral communication.
Indicator(s): Core Learning Goal 2
2.2.2. The student will explain the role of natural forces in the earth.
At least retention of an atmosphere, an agent of erosion and deposition, tides and deep ocean currents
2.4.4 The student will apply the law of conservation to the processes that affect rocks and minerals.
2.5.2. The student will analyze the effects of natural cycles on human activity.
At least weathering, erosion and deposition, agriculture, aquaculture
In this lesson we will examine the different agents of erosion and deposition. We will explore the features that are formed and the processes that influence their formation. The impact of humans on the environment will be explored.
Background knowledge / teacher notes:
After weathering, fragments of soil are carried away. Erosion is the process of transporting fragments produced by weathering. Agents of erosion include wind, waves, gravity, glaciers, rivers and streams. Long-term erosion can reshape the landscape forming features that can be seen on topographic maps. Pikes Peak, the Appalachian Mountains, and mesas are all land features that have been modified by weathering and erosion.
Students will read about agents of erosion and identify the type of agents they used in the lab. Agents of erosion include gravity, wind, glaciers, and water.
GT Connection: Explore rapid mass movements (rockfall, landslide, mudflow) and slow mass movements (soilfluction, slumping and creep).
Sediment transport imageshttp://visibleearth.nasa.gov/view_set.php?categoryID=728
Career Connection: Discuss careers in this field soil conservationist, hydrologist, and agronomist.
Students will explore land features formed by erosion and deposition and the human impact on the environment.
Social Studies Connection: Discuss how the early settlers used water as their major method of transporting materials.
Make a drawing of your observations.
Mississippi River delta sedimentation
Yukon delta sedimentation http://disc.sci.gsfc.nasa.gov/geomorphology/GEO_5/GEO_PLATE_D-9.shtml
Teacher will provide pictures of various landforms (valleys, plateau, mesa, Chesapeake Bay, plains, river deltas...). Students will identify the processes responsible for the formation of each landform.
Journal Write: Create a systems diagram showing the processes responsible for the formation of each of the above landform. Include the effect of human impact in your diagram (biosphere connection).
Pictures of landforms: mesa, butte, plains, and valleys, etc.
Earth /Space Science Textbook