Plate Tectonics PDF
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The Ohio State University
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This document is a collection of notes on plate tectonics, including questions and answers on various aspects of the theory, such as convergent and divergent boundaries, and the processes of subduction and seafloor spreading. It also discusses the history of continental drift and related concepts.
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Divergent Plate Boundaries The Earth is Tearing Itself Apart Question #1: At convergent boundaries, Earth’s plates are _______: A. Not moving. B. Moving towards each other. C. Moving away from each other. D. Being created. 12 Question #1 Answer...
Divergent Plate Boundaries The Earth is Tearing Itself Apart Question #1: At convergent boundaries, Earth’s plates are _______: A. Not moving. B. Moving towards each other. C. Moving away from each other. D. Being created. 12 Question #1 Answer: B. Moving towards each other. Convergence of the Nazca and South American Plates https://pubs.usgs.gov/publications/text/Nazca.html 13 Question #2: When two plates collide, the heavier of the two is pulled under the lighter plate in a process called ______: 14 Question #2 Answer: Subduction! https://pubs.usgs.gov/gip/dynamic/graphics/Fig21oceancont.gif 15 Question #3: What are the three types of subduction zones found on Earth? 16 Question #3 Answer: Oceanic-Continental Convergence Oceanic-Oceanic Convergence Continental-Continental Convergence 17 18 https://pubs.usgs.gov/gip/dynamic/understanding.html#anchor15039288 Question #4: What is the gravity-controlled process where a cold, denser oceanic slab sinks into a subduction zone? 19 Question #4 Answer: Slab Pull – the process drags the rest of the plate with it! https://pubs.usgs.gov/gip/dynamic/graphics/Fig32.gif 20 Question #5: What other process depicted on this image do scientists believe aid in the movement of Earth’s plates? https://pubs.usgs.gov/gip/dynamic/graphics/Fig32.gif 21 Question #5 Answer: Convection Cells – a process similar to boiling water! 22 Question #6: Based on your knowledge of what a Convergent Boundary is, what do you think happens at a Divergent Boundary? 23 Question #6 Answer: Earth’s plates are moving away from each other! https://pubs.usgs.gov/publications/text/ridge.html 24 Activity 4. Lets Tune In 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
