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Product Number: SB46129
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Grades 4-9. Observe weathering, erosion, deposition, volcanic action, and earthquakes. This video identifies various types of mountains, explains how the seismograph and Richter Scale work, relates earthquakes and volcanic activity to plate movement, labels the three layers of the earth, and explains how physical and chemical weathering change the earth’s crust. Includes experiments that help students master each subject. Guide includes activities to develop critical thinking and problem solving skills. 52 minutes.