Geology and Earth Sciences: Terms and Concepts, Quizzes of Geography

Download Geology and Earth Sciences: Terms and Concepts and more Quizzes Geography in PDF only on Docsity! TERM 1 Earth's Age DEFINITION 1 ~4.5 billion years TERM 2 What are the major components of the Earth's Interior? DEFINITION 2 1. Inner and Outer Core (31% volume) 2. Mantle (68% volume) 3. Crust (< 0.5% volume) TERM 3 What is the percent coverage of the Earth's continents vs. the oceans? DEFINITION 3 29% Continents, 71% Oceans TERM 4 What systems model was developed to organize the framework of the world? When? DEFINITION 4 Plate Tectonics - 1960's TERM 5 What is the thickness of the crust under oceans oceans vs. continents? DEFINITION 5 10 km thick under oceans, 35 km thick under continents \ TERM 6 What are the crust's divisions called? How many are there? DEFINITION 6 Plates: 12 large, many small TERM 7 3 Plate Margins DEFINITION 7 1. Spreading centers 2. Subduction zones 3. Shear zones TERM 8 3 Facts of Spreading Centers DEFINITION 8 1. HUGE ridge systems (rocky mountain size) but mainly oceanic 2. Location of volcanic activity 3. Location of shallow earthquakes TERM 9 3 Facts of Subduction Zones DEFINITION 9 1. Edge of one plate dives under another and melts from contact with Earth's interior 2. Location of deep earthquakes 3. Location of deep ocean trenches TERM 10 Shear Zones DEFINITION 10 1. 2 plates rubbing past one another, no new material added to either