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... 2. The hypothesis that continents can drift apart and have done so in the past is known as .______________________ 3. The ______________________ is the soft layer of the mantle on which the tectonic plates move. 4. ______________________ is stress that occurs when forces act to stretch anobject. 5. ...
... 2. The hypothesis that continents can drift apart and have done so in the past is known as .______________________ 3. The ______________________ is the soft layer of the mantle on which the tectonic plates move. 4. ______________________ is stress that occurs when forces act to stretch anobject. 5. ...
Chapter 14 Resource: Plate Tectonics
... 20. The theory that describes Earth’s crust and upper mantle as being broken into sections is called ____________________. 21. The theory of ____________________ was shown to be correct by age evidence and magnetic clues. 22. ____________________, occurring in the mantle, are thought to be the force ...
... 20. The theory that describes Earth’s crust and upper mantle as being broken into sections is called ____________________. 21. The theory of ____________________ was shown to be correct by age evidence and magnetic clues. 22. ____________________, occurring in the mantle, are thought to be the force ...
Introduction to Structural Geology
... belts over 10-100’s of km - greenstone belts - rocks at greenschist or lower grades of metamorphism *Greenstone - mafic to silicic volcanic rocks and shallow intrusive bodies Sutures-regions of deformed oceanic material thought to be remnants of disappeared oceans Structural features of Archean Terr ...
... belts over 10-100’s of km - greenstone belts - rocks at greenschist or lower grades of metamorphism *Greenstone - mafic to silicic volcanic rocks and shallow intrusive bodies Sutures-regions of deformed oceanic material thought to be remnants of disappeared oceans Structural features of Archean Terr ...
Wizard Test Maker
... presence of fossils of the same species of organisms on continents that are separated by an ocean indicates A) this species was capable of swimming long distances. B) the continents must have been connected at some time in the past. C) a species can evolve separately on two different continents. D) ...
... presence of fossils of the same species of organisms on continents that are separated by an ocean indicates A) this species was capable of swimming long distances. B) the continents must have been connected at some time in the past. C) a species can evolve separately on two different continents. D) ...
- Google Sites
... The ends of eras are marked by mass extinctions of plant and/or animal life. 14. What makes a good index fossil? An organism that had hard body parts, that lived all over the world for a relatively short period of time. 15. What would fossils of sea creatures found on land indicate? This would indic ...
... The ends of eras are marked by mass extinctions of plant and/or animal life. 14. What makes a good index fossil? An organism that had hard body parts, that lived all over the world for a relatively short period of time. 15. What would fossils of sea creatures found on land indicate? This would indic ...
Chapter 22: The Precambrian Earth
... rocks are between 4.1- and 4.2 billion years old. The zircon existed before it became cemented into the sedimentary rocks, and scientists theorize that the zircon is the eroded residue left behind from 4.1 to 4.2-billion-year-old granitic crustal rocks. Based on this evidence, Earth must be at least ...
... rocks are between 4.1- and 4.2 billion years old. The zircon existed before it became cemented into the sedimentary rocks, and scientists theorize that the zircon is the eroded residue left behind from 4.1 to 4.2-billion-year-old granitic crustal rocks. Based on this evidence, Earth must be at least ...
Layers of the Earth
... (melted rock) here can act both as a rigid solid and a fluid liquid. • Although the material in this location is made from rock, it can still be bent twisted, folded and/or molded ...
... (melted rock) here can act both as a rigid solid and a fluid liquid. • Although the material in this location is made from rock, it can still be bent twisted, folded and/or molded ...
Quick Review
... Igneous rocks: Magma cools deep below the earth’s surface to form crystalline granite. Lava flows out onto the surface of the Earth to create fine-grained basalt. ...
... Igneous rocks: Magma cools deep below the earth’s surface to form crystalline granite. Lava flows out onto the surface of the Earth to create fine-grained basalt. ...
File
... a. Upper mantle and crust b. Crust only c. Upper mantle only d. All layers of Earth except for the inner core 2. Which of the following is true of oceanic plates compared to continental plates? a. Oceanic plates tend to be much older b. Oceanic plates tend to much thicker c. Oceanic plates are compo ...
... a. Upper mantle and crust b. Crust only c. Upper mantle only d. All layers of Earth except for the inner core 2. Which of the following is true of oceanic plates compared to continental plates? a. Oceanic plates tend to be much older b. Oceanic plates tend to much thicker c. Oceanic plates are compo ...
Name
... converge. Include the landform and seafloor features that result. Give two examples of where this occurs (or has occurred in the past) on earth. Describe what happens when an oceanic plate converges with a continental plate. Include the landform and seafloor features that result. Give two examples o ...
... converge. Include the landform and seafloor features that result. Give two examples of where this occurs (or has occurred in the past) on earth. Describe what happens when an oceanic plate converges with a continental plate. Include the landform and seafloor features that result. Give two examples o ...
No Slide Title
... • Earth’s very early atmosphere was probably composed of – hydrogen and helium, • the most abundant gases in the universe ...
... • Earth’s very early atmosphere was probably composed of – hydrogen and helium, • the most abundant gases in the universe ...
Chapter 7 Study Guide Plate Tectonics What is the major evidence
... What is the major evidence that sea-floor spreading creates new lithosphere? Explain your answer. If scientists were able to drill through the Earth’s crust, would it be better to drill through oceanic crust or continental crust? Explain your answer. Tectonic plates forming a transform boundary may ...
... What is the major evidence that sea-floor spreading creates new lithosphere? Explain your answer. If scientists were able to drill through the Earth’s crust, would it be better to drill through oceanic crust or continental crust? Explain your answer. Tectonic plates forming a transform boundary may ...
Powerpoint Presentation Physical Geology, 10th ed.
... – Describes lithosphere as being broken into plates that are in motion – Explains origin and distribution of volcanoes, fault zones and mountain belts ...
... – Describes lithosphere as being broken into plates that are in motion – Explains origin and distribution of volcanoes, fault zones and mountain belts ...
1-2 Notes: Continental Drift Continents Join Together and Split Apart
... In the ___________’s, mapmakers noticed that the coasts of Africa and South America looked like fit together like puzzle pieces. In ___________, Alfred Wegener proposed a hypothesis called continental drift. His hypothesis stated that Earth’s landmasses were once joined together in a single co ...
... In the ___________’s, mapmakers noticed that the coasts of Africa and South America looked like fit together like puzzle pieces. In ___________, Alfred Wegener proposed a hypothesis called continental drift. His hypothesis stated that Earth’s landmasses were once joined together in a single co ...
SCIENCE IN THE NEWS | Plate Tectonics
... The Americans proposed that the floor of the Atlantic Ocean is moving away from each side of the split and expanding. The movement is very slow -- a few centimeters a year. In time, they said, the moving ocean floor is blocked when it comes up against the edge of a continent. Then it is forced down ...
... The Americans proposed that the floor of the Atlantic Ocean is moving away from each side of the split and expanding. The movement is very slow -- a few centimeters a year. In time, they said, the moving ocean floor is blocked when it comes up against the edge of a continent. Then it is forced down ...
layers of the Earth are the crust
... is a softer layer than the rigid lithosphere, but is still considered to be solid. • It is soft enough to bend like plastic, but hard enough to stub your toe if you kicked it. ...
... is a softer layer than the rigid lithosphere, but is still considered to be solid. • It is soft enough to bend like plastic, but hard enough to stub your toe if you kicked it. ...
Earth`s Layers
... Processes that affect Earth’s surface are often a result of what’s going on inside Earth. But what’s inside Earth? This question is very difficult to answer, because geologists are unable to see deep inside Earth. But geologists have found other methods to study the interior of Earth. Geologists hav ...
... Processes that affect Earth’s surface are often a result of what’s going on inside Earth. But what’s inside Earth? This question is very difficult to answer, because geologists are unable to see deep inside Earth. But geologists have found other methods to study the interior of Earth. Geologists hav ...
Document
... Oceanic plate is denser than a continental plate so it subducts under the continental plate. At mid ocean ridges two oceanic plates are moving away from one another so they will not subduct. 19. Identifying Relationships New tectonic material continually forms at divergent boundaries. Tectonic plate ...
... Oceanic plate is denser than a continental plate so it subducts under the continental plate. At mid ocean ridges two oceanic plates are moving away from one another so they will not subduct. 19. Identifying Relationships New tectonic material continually forms at divergent boundaries. Tectonic plate ...
Main Idea 2
... Forces below Earth’s surface build up our landforms. Earth’s Plates • The planet’s continents, or large landmasses, are part of Earth’s crust—the solid outer layer of the planet. • Theory of plate tectonics suggests that Earth’s surface is divided into a dozen or so slow-moving plates, or pieces of ...
... Forces below Earth’s surface build up our landforms. Earth’s Plates • The planet’s continents, or large landmasses, are part of Earth’s crust—the solid outer layer of the planet. • Theory of plate tectonics suggests that Earth’s surface is divided into a dozen or so slow-moving plates, or pieces of ...
Chapter 2
... Forces below Earth’s surface build up our landforms. Earth’s Plates • The planet’s continents, or large landmasses, are part of Earth’s crust—the solid outer layer of the planet. • Theory of plate tectonics suggests that Earth’s surface is divided into a dozen or so slow-moving plates, or pieces of ...
... Forces below Earth’s surface build up our landforms. Earth’s Plates • The planet’s continents, or large landmasses, are part of Earth’s crust—the solid outer layer of the planet. • Theory of plate tectonics suggests that Earth’s surface is divided into a dozen or so slow-moving plates, or pieces of ...
From Plate Tectonics to Climate
... magma, then released into atmosphere (degassing) => magma reaches surface with low gas content • High magma viscosity => bubbles are trapped inside magma as it rises => magma reaches the surface with high gas content at high pressure w.r.t. atmospheric pressure => explosion, release of large amounts ...
... magma, then released into atmosphere (degassing) => magma reaches surface with low gas content • High magma viscosity => bubbles are trapped inside magma as it rises => magma reaches the surface with high gas content at high pressure w.r.t. atmospheric pressure => explosion, release of large amounts ...
THE EARTH`S LITHOSPHERE
... magma on the surface of the mantle or “lithospheric mantle.” Seismic wave velocities in this layer are between 6.5 and 7.8 km per second. ...
... magma on the surface of the mantle or “lithospheric mantle.” Seismic wave velocities in this layer are between 6.5 and 7.8 km per second. ...
EDWARD J. GARNERO 2. Employer - AGU Elections
... dynamics, and evolution of interiors, especially as it relates to observables at Earth’s surfaces (hotspots, LIPs, subduction zones, plates, etc.). Most of my work has been deep Earth (core-mantle boundary, ultra-low velocity zones, outermost core, D” discontinuities and anisotropy, LLSVPs, etc.), b ...
... dynamics, and evolution of interiors, especially as it relates to observables at Earth’s surfaces (hotspots, LIPs, subduction zones, plates, etc.). Most of my work has been deep Earth (core-mantle boundary, ultra-low velocity zones, outermost core, D” discontinuities and anisotropy, LLSVPs, etc.), b ...
History of Earth
The history of Earth concerns the development of the planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to the understanding of the main events of the Earth's past. The age of Earth is approximately one-third of the age of the universe. An immense amount of biological and geological change has occurred in that time span.Earth formed around 4.54 billion years ago by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere, but it contained almost no oxygen and would have been toxic to humans and most modern life. Much of the Earth was molten because of frequent collisions with other bodies which led to extreme volcanism. One very large collision is thought to have been responsible for tilting the Earth at an angle and forming the Moon. Over time, the planet cooled and formed a solid crust, allowing liquid water to exist on the surface.The first life forms appeared between 3.8 and 3.5 billion years ago. The earliest evidences for life on Earth are graphite found to be biogenic in 3.7-billion-year-old metasedimentary rocks discovered in Western Greenland and microbial mat fossils found in 3.48-billion-year-old sandstone discovered in Western Australia. Photosynthetic life appeared around 2 billion years ago, enriching the atmosphere with oxygen. Life remained mostly small and microscopic until about 580 million years ago, when complex multicellular life arose. During the Cambrian period it experienced a rapid diversification into most major phyla. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described.Geological change has been constantly occurring on Earth since the time of its formation and biological change since the first appearance of life. Species continuously evolve, taking on new forms, splitting into daughter species, or going extinct in response to an ever-changing planet. The process of plate tectonics has played a major role in the shaping of Earth's oceans and continents, as well as the life they harbor. The biosphere, in turn, has had a significant effect on the atmosphere and other abiotic conditions on the planet, such as the formation of the ozone layer, the proliferation of oxygen, and the creation of soil.