Study Guide - TeacherWeb
... 10. What did Wegener name the “Supercontintent”? 11. What evidence did Wegener use to support his theory? 12. Why didn’t scientists believe Wegeners theory? 13. What is the mid-ocean ridge? What happens there? 14. What did scientists use to map the ocean floor? 15. What is Sea-Floor spreading? 16. W ...
... 10. What did Wegener name the “Supercontintent”? 11. What evidence did Wegener use to support his theory? 12. Why didn’t scientists believe Wegeners theory? 13. What is the mid-ocean ridge? What happens there? 14. What did scientists use to map the ocean floor? 15. What is Sea-Floor spreading? 16. W ...
A Late Paleozoic association of plants found only on the
... The theory that the seafloor moves away from spreading ridges and is eventually consumed at subduction zones. ...
... The theory that the seafloor moves away from spreading ridges and is eventually consumed at subduction zones. ...
Lesson 6 - Earth Formation
... The crust constantly changes due to erosion, deposition, glacial action and plate tectonics. There are two types of crust. Continental - Granite-like rock rich in silicon, oxygen and aluminum. Oceanic - Igneous, basaltic rock containing greater amounts of heavier elements such as magnesium and i ...
... The crust constantly changes due to erosion, deposition, glacial action and plate tectonics. There are two types of crust. Continental - Granite-like rock rich in silicon, oxygen and aluminum. Oceanic - Igneous, basaltic rock containing greater amounts of heavier elements such as magnesium and i ...
Ch 9 3 Actions at Plate Boundaries
... Oceanic Ridge – along well-developed divergent plate boundaries, area where seafloor is elevated The system of ridges is the longest physical feature on Earth’s surface (70,000 km long) These features are 1000 to 4000 km wide, not narrow at all Rift Valley – Deep faulted structures found along the r ...
... Oceanic Ridge – along well-developed divergent plate boundaries, area where seafloor is elevated The system of ridges is the longest physical feature on Earth’s surface (70,000 km long) These features are 1000 to 4000 km wide, not narrow at all Rift Valley – Deep faulted structures found along the r ...
File
... lithosphere forms the thin outer shell of Earth and is broken into several pieces called plates asthenosphere: solid, plastic layer of the mantle beneath the lithosphere made of mantle rock that flows very slowly which allows plates to move on top of it ...
... lithosphere forms the thin outer shell of Earth and is broken into several pieces called plates asthenosphere: solid, plastic layer of the mantle beneath the lithosphere made of mantle rock that flows very slowly which allows plates to move on top of it ...
What are the three types of convergent boundaries? oceanic
... Potentially the most dangerous to human and most destructive to the environment; Mount St. Helens was an example of this type of volcano. Composite Stretching along the western coasts of North and South America and down the eastern coast of Asia, the CircumPacific Belt marks the location of most con ...
... Potentially the most dangerous to human and most destructive to the environment; Mount St. Helens was an example of this type of volcano. Composite Stretching along the western coasts of North and South America and down the eastern coast of Asia, the CircumPacific Belt marks the location of most con ...
The Sea
... • Deep sea trenches are found near chains of active volcanoes. These volcanoes can be at the edges of continents or in the oceans. Trenches are the deepest places on Earth. The deepest trench is the Mariana Trench in the southwestern Pacific Ocean. This trench plunges about 11 kilometers (35,840 fee ...
... • Deep sea trenches are found near chains of active volcanoes. These volcanoes can be at the edges of continents or in the oceans. Trenches are the deepest places on Earth. The deepest trench is the Mariana Trench in the southwestern Pacific Ocean. This trench plunges about 11 kilometers (35,840 fee ...
Plate Tectonic Theory
... which one gets forced up and which one down….More dense plate sinks under other past • Oceanic Crust is more dense than continental crust ...
... which one gets forced up and which one down….More dense plate sinks under other past • Oceanic Crust is more dense than continental crust ...
(>8.0 magnitude, past 100 yrs) Active Volcanoes
... 1. The crust and the upper mantle together make up a zone of rigid, brittle rock called the: ...
... 1. The crust and the upper mantle together make up a zone of rigid, brittle rock called the: ...
thetheoryofplatetectonics
... • Lithosphere- rigid layer of Earth about 100 km, made of the crust and part of the upper mantle • Pangaea- large ancient landmass that was composed of all the continents joined together • Plate- a large section of Earth’s oceanic or continental crust and rigid upper mantle that moves around the ast ...
... • Lithosphere- rigid layer of Earth about 100 km, made of the crust and part of the upper mantle • Pangaea- large ancient landmass that was composed of all the continents joined together • Plate- a large section of Earth’s oceanic or continental crust and rigid upper mantle that moves around the ast ...
Slide 1
... South America fit exactly against the west coast of Africa, as if they had once been joined?” (1910, letter to his fiancee) ...
... South America fit exactly against the west coast of Africa, as if they had once been joined?” (1910, letter to his fiancee) ...
Theory of Plate Tectonics: Mechanism 1
... • Where plates collide - continents eventually grow • Two types: – collision zones (e.g. Himalaya) and – Subduction zones (e.g. Japan, Andes, ...
... • Where plates collide - continents eventually grow • Two types: – collision zones (e.g. Himalaya) and – Subduction zones (e.g. Japan, Andes, ...
Name____________________________
... Oceanic Crust: Dense crust formed by seafloor spreading at Mid-Ocean Ridges. Continental Crust: Less-dense crust that makes up the continents. Continental Drift: A theory stating that the Earth's continents have been joined together and have moved away from each other at different times in the Earth ...
... Oceanic Crust: Dense crust formed by seafloor spreading at Mid-Ocean Ridges. Continental Crust: Less-dense crust that makes up the continents. Continental Drift: A theory stating that the Earth's continents have been joined together and have moved away from each other at different times in the Earth ...
GEO Ch 5A
... ______, twigs, litter, and small ______. Small particles of soil/rock are also found=sediment=sedimentary rock over time. 1. What would the Earth’s surface be like today if erosion were the only force acting upon it? What is erosion? 2. What are the four layers that the Earth is composed of? (Explai ...
... ______, twigs, litter, and small ______. Small particles of soil/rock are also found=sediment=sedimentary rock over time. 1. What would the Earth’s surface be like today if erosion were the only force acting upon it? What is erosion? 2. What are the four layers that the Earth is composed of? (Explai ...
The Theory of Plate Tectonics - Ouray School District R-1
... produce large mountains (hymliays) 3) Oceanic vs oceanic: One goes under the other and the subducted plate produces magma that forms and rises to form an island arc. ...
... produce large mountains (hymliays) 3) Oceanic vs oceanic: One goes under the other and the subducted plate produces magma that forms and rises to form an island arc. ...
study-guide-test-on-plate
... The plates of the lithosphere float on the asthenosphere The results of plate movements can be seen at plate boundaries The Himalaya mountains are the result of a collision between the indo-Australian plate and Eurasian plate The presence of the same fossils and same rocks found on different contine ...
... The plates of the lithosphere float on the asthenosphere The results of plate movements can be seen at plate boundaries The Himalaya mountains are the result of a collision between the indo-Australian plate and Eurasian plate The presence of the same fossils and same rocks found on different contine ...
benchmark 3 study guide with answers
... 13. What geological features are created at convergent boundaries? Mountains (2 continental plates), trenches (oceanic and oceanic plate), volcanoes (continental and oceanic plate) 14. What geological features are created at divergent boundaries? Sea floor spreading- makes mid ocean ridges (2 oceani ...
... 13. What geological features are created at convergent boundaries? Mountains (2 continental plates), trenches (oceanic and oceanic plate), volcanoes (continental and oceanic plate) 14. What geological features are created at divergent boundaries? Sea floor spreading- makes mid ocean ridges (2 oceani ...
Oceanic trench
The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor. They are also the deepest parts of the ocean floor. Oceanic trenches are a distinctive morphological feature of convergent plate boundaries, along which lithospheric plates move towards each other at rates that vary from a few mm to over ten cm per year. A trench marks the position at which the flexed, subducting slab begins to descend beneath another lithospheric slab. Trenches are generally parallel to a volcanic island arc, and about 200 km (120 mi) from a volcanic arc. Oceanic trenches typically extend 3 to 4 km (1.9 to 2.5 mi) below the level of the surrounding oceanic floor. The greatest ocean depth to be sounded is in the Challenger Deep of the Mariana Trench, at a depth of 11,034 m (36,201 ft) below sea level. Oceanic lithosphere moves into trenches at a global rate of about 3 km2/yr.