The lines represent magnetic field lines, blue when the field points towards the center and yellow when away.
The rotation axis of the Earth is centered and vertical.
Science Experiments, Great Ice Cube Race The great ice cube race tests the time it takes for different shapes of ice cubes to melt.
This 5-12-grade activity introduces students to the idea of sequencing information in overlapping data sets and the Principle of Superposition, which is a core concept in relative dating. Offers history of age dating, stratigraphic principles, rock correlation, fossil correlations, radiometric dating, and the geologic time scale. Short discussion of radioactive dating and stratigraphic principles. | Teaching Weathering, Erosion, & Deposition | | Teaching the Metric System | Teaching the Water Cycle | Teaching Plate Tectonics | Teaching Earthquakes | Teaching Volcanoes | | Teaching Experimental Design | Contains over 200 pages of ready-to-run materials covering: Relative and Absolute Time, Sequencing Geologic Events, Geologic History Timelines, Geologic Eras, Fossils, Tree Cookies, and Radiactive Dating.The Packet contains: Objectives and strategies, detailed lesson plans & ideas, bellwork and journal suggestions, labs and worksheets with answers, tests & quizzes with answers, active learning suggestions including the Rules of the Game Foldable, and game suggestions you can run off on colored paper. This activity was selected for the On the Cutting Edge Exemplary Teaching Collection Resources in this top level collection a) must have scored Exemplary or Very Good in all five review categories, and must also rate as “Exemplary” in at least three of the five categories.Determining the Age of Rocks and Fossils, University of California, Berkeley.