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Bathymetric Map Project Begin to find plate boundaries • Ocean ridges, rises, and deep ocean trenches are all geologic features that are formed at plate boundaries • Let’s use these features to draw some of our plate boundaries • Use a Yellow colored pencil to trace over the ridges and rises (white areas). Continue finding plate boundaries • Use a Pink/Red colored pencil to trace over the trenches (blue areas). • Use a Green colored pencil to trace over the Mountains (white on land). Using earthquake and volcanic activity to find plate boundaries • Earthquakes and volcanoes are common along tectonic plate boundaries • Plot the 10 circled earthquakes with this colored symbol (blue oval) using latitude and longitude • Plot the 8 circled volcanoes with this colored symbol (purple triangle) using latitude and longitude • Complete boundaries by connecting the earthquakes and volcanoes using an Orange pencil Label 7 major tectonic plates: Eurasian, Indo-Australian, Pacific, American, African, Antarctic, Nazca What is the direction of motion for the major plates? Held stationary Color the plates • Lightly color each plate a different color. Remember that the left and right edges of the map are connected; color any split plates with the same color! Hold the map edges together, forming a cylinder, so that you can see this relationship. • Make sure you have an arrow on each plate (except the African plate) to show direction of motion Label Plate Boundaries • Based on the movement of the plates and what occurs at the boundaries, label each major boundary. • Divergent • Convergent • Transform Copyright © Houghton Mifflin Company. All rights reserved. Essentials of Geology, 1b–9