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Peer reviewedMyrow, Paul Michael – Journal of Geological Education, 1990
Reasons for color in sedimentary rocks are explored. Graphs relating the color of rock and corresponding organic content and oxidation state of iron, and of the temporal evolution of a rock sample, are presented. The development of these graphs is discussed. (CW)
Descriptors: Chemical Reactions, College Science, Color, Earth Science
Peer reviewedWise, Donald Underkofler – Journal of Geological Education, 1990
Presented is an activity in which a mystery setting is used to motivate students to construct their own decay curves of melting ice used as an analogy to radioactive decay. Procedures, materials, apparatus, discussion topics, presentation, and thermodynamics are discussed. (CW)
Descriptors: College Science, Earth Science, Geology, Graphs
Peer reviewedConway, Gregory J. – Science Teacher, 1989
Describes an activity in which students graph changes in tides and ocean levels over a period in order to obtain a visual representation of the changes taking place and their effects upon the Earth. Provides questions for students to answer after construction of the graphs. (RT)
Descriptors: Climate, Earth Science, Environmental Influences, Experiential Learning
