This lesson was developed to give participants an understanding of Earth's water …
This lesson was developed to give participants an understanding of Earth's water cycle. In this one-hour long activity, students participate in a webquest to learn about the water cycle, and then build a mini-model of the water cycle to observe how water moves through Earth's four systems. The activity uses the 5E instructional model and is part of the "Survivor Earth" series of one-hour lessons.
This site from Tulane University consists of an introductory lecture by Dr. …
This site from Tulane University consists of an introductory lecture by Dr. Stephen Nelson on X-ray crystallography as it is used in mineral identification. Topics include X-rays and the production of X-rays, the two types of X-ray spectra, continuous and characteristic, X-ray diffraction and Bragg's Law, and the X-ray powder method. Drawings and diagrams help illustrate the concepts presented in the lecture.
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