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Continental Drift, sea floor spreading and plate tectonics PDF
... mountain ranges with a steep, narrow valley running down its center. These underwater mountain ranges were all connected and spread through the center of most oceans. The range when all connected were 65,000 km long. In 1947, scientists went to map the Mid-Atlantic ridge. While studying the ridge, t ...
... mountain ranges with a steep, narrow valley running down its center. These underwater mountain ranges were all connected and spread through the center of most oceans. The range when all connected were 65,000 km long. In 1947, scientists went to map the Mid-Atlantic ridge. While studying the ridge, t ...
Sample
... moving together), and transform (plates sliding past one another). 4. The Earth’s magnetic field is produced by convection of the liquid outer core around the solid inner core. 5. Paleomagnetism and magnetic reversals have revealed long-term patterns of plate motion, and led to the concept of sea-fl ...
... moving together), and transform (plates sliding past one another). 4. The Earth’s magnetic field is produced by convection of the liquid outer core around the solid inner core. 5. Paleomagnetism and magnetic reversals have revealed long-term patterns of plate motion, and led to the concept of sea-fl ...
Theory of Continental Drift
... mountain ranges with a steep, narrow valley running down its center. These underwater mountain ranges were all connected and spread through the center of most oceans. The range when all connected were 65,000 km long. In 1947, scientists went to map the Mid-Atlantic ridge. While studying the ridge, t ...
... mountain ranges with a steep, narrow valley running down its center. These underwater mountain ranges were all connected and spread through the center of most oceans. The range when all connected were 65,000 km long. In 1947, scientists went to map the Mid-Atlantic ridge. While studying the ridge, t ...
Plate Tectonics
... •Volcanos dispersed, most on one side •Earthquakes complex, shallow (to medium) on both sides •Age data not symmetrical, one side of boundary •Complex topography, wide mountains and basins •Rocks? ...
... •Volcanos dispersed, most on one side •Earthquakes complex, shallow (to medium) on both sides •Age data not symmetrical, one side of boundary •Complex topography, wide mountains and basins •Rocks? ...
Plate Techtonics Review Jeopardy File
... This geologist who named the process when new ocean lithosphere forms at a Mid-Ocean ridge when magma rises. ...
... This geologist who named the process when new ocean lithosphere forms at a Mid-Ocean ridge when magma rises. ...
Earths Layered Structure
... Meteorites formed from the same materials at the same time as the terrestrial planets. Some of them are rocky and some are metallic EQ waves were found to reflect, bounce off “something” solid in the center ...
... Meteorites formed from the same materials at the same time as the terrestrial planets. Some of them are rocky and some are metallic EQ waves were found to reflect, bounce off “something” solid in the center ...
Warm-Up - mssarnelli
... What did he use as evidence to prove his theory? What LAND FORM was later discovered on the ocean floor that supported his theory? ...
... What did he use as evidence to prove his theory? What LAND FORM was later discovered on the ocean floor that supported his theory? ...
chapter_3_powerpoint_le
... – Hot spots in the mantle cause volcanoes on the plate above, which form in a line as the plate moves over the hot spot in the mantle, getting older in the direction of plate movement – Sediment on the seafloor is very thin at mid ocean ridges (where seafloor is very young) and thicker near trenches ...
... – Hot spots in the mantle cause volcanoes on the plate above, which form in a line as the plate moves over the hot spot in the mantle, getting older in the direction of plate movement – Sediment on the seafloor is very thin at mid ocean ridges (where seafloor is very young) and thicker near trenches ...
049555507X_131304 - ASB
... The Curie point is the temperature at which ironbearing minerals gain their magnetism. It is important because as long as the rock is not subsequently heated above the Curie point, it will preserve that remnant magnetism. ...
... The Curie point is the temperature at which ironbearing minerals gain their magnetism. It is important because as long as the rock is not subsequently heated above the Curie point, it will preserve that remnant magnetism. ...
Earth`s Layers The Earth layers are: the crust, the mantle, the outer
... and is separated into the upper and lower mantle. This is where most of the internal heat of the Earth is located. ...
... and is separated into the upper and lower mantle. This is where most of the internal heat of the Earth is located. ...
chapter2
... The Curie point is the temperature at which ironbearing minerals gain their magnetism. It is important because as long as the rock is not subsequently heated above the Curie point, it will preserve that remnant magnetism. ...
... The Curie point is the temperature at which ironbearing minerals gain their magnetism. It is important because as long as the rock is not subsequently heated above the Curie point, it will preserve that remnant magnetism. ...
No Slide Title
... • eg. the shape of the west coast of Africa and the east coast of South America are remarkably similar and were perhaps once joined ...
... • eg. the shape of the west coast of Africa and the east coast of South America are remarkably similar and were perhaps once joined ...
The Restless Earth
... 4. When convection takes place in the mantle, why does cool rock materials sink and warm rock materials rise? ...
... 4. When convection takes place in the mantle, why does cool rock materials sink and warm rock materials rise? ...
2013年1月12日托福写作真题回忆
... dives under the edge of another and is reincorporated into the mantle. Both kinds of plate boundary are associated with fault systems, earthquakes and volcanism, but the kinds of geologic activity observed at the two boundaries are quite different. The idea of sea-floor spreading actually preceded t ...
... dives under the edge of another and is reincorporated into the mantle. Both kinds of plate boundary are associated with fault systems, earthquakes and volcanism, but the kinds of geologic activity observed at the two boundaries are quite different. The idea of sea-floor spreading actually preceded t ...
Resolution of direction of oceanic magnetic lineations by the sixth
... track filtering in the MF modeling procedure removes some genuine lithospheric signal. On the other hand, it has so far not been possible to recover coefficients beyond degree 65 from unfiltered data. R. Holme (personal communication, 2007) therefore suggested accounting for the effect of the filter ...
... track filtering in the MF modeling procedure removes some genuine lithospheric signal. On the other hand, it has so far not been possible to recover coefficients beyond degree 65 from unfiltered data. R. Holme (personal communication, 2007) therefore suggested accounting for the effect of the filter ...
ES Ch 1 NOTES Plate Tectonics
... swamps, from the remains of vegetation that grew as long as 400 million years ago. 5) Geology- Rock layers found in on the _______________________ of one continent may be the same as rock layers on other continents. B) The theory of _____________________________________________________ explains how ...
... swamps, from the remains of vegetation that grew as long as 400 million years ago. 5) Geology- Rock layers found in on the _______________________ of one continent may be the same as rock layers on other continents. B) The theory of _____________________________________________________ explains how ...
Chapter 5 Review
... (6)Continental crust is made of rocks such as granite. (7)Slow movements of mantle rock called radiation transfer heat in the mantle. (8)The single landmass that broke apart 250 million years ago was Pangaea. (9)Mid-ocean ridges are places where oceanic crust sinks back to the mantle. (10)When two c ...
... (6)Continental crust is made of rocks such as granite. (7)Slow movements of mantle rock called radiation transfer heat in the mantle. (8)The single landmass that broke apart 250 million years ago was Pangaea. (9)Mid-ocean ridges are places where oceanic crust sinks back to the mantle. (10)When two c ...
SEISMIC ACTIVITY, GRAVITY AND MAGNETIC MEASUREMENTS
... velocity within the fields. 2.2 The case of Berlin geothermal field The spatial distribution of seismicity recorded in the period 1996 - 2005 at the Berlin Geothermal Field covering an area of 80 km2 is shown on the left in Figure 2. The recorded seismicity reflected the geothermal anomaly and descr ...
... velocity within the fields. 2.2 The case of Berlin geothermal field The spatial distribution of seismicity recorded in the period 1996 - 2005 at the Berlin Geothermal Field covering an area of 80 km2 is shown on the left in Figure 2. The recorded seismicity reflected the geothermal anomaly and descr ...
Earth Science Chapter 5 - alisa25k
... • You are Harry Hess! (or Harriet Hess) • You have just concluded your research about sea-floor spreading • Prepare a speech for your science conference in which you will share your findings • Include your theory, the evidence that supports if from molten material, magnetic stripes, and drilling sam ...
... • You are Harry Hess! (or Harriet Hess) • You have just concluded your research about sea-floor spreading • Prepare a speech for your science conference in which you will share your findings • Include your theory, the evidence that supports if from molten material, magnetic stripes, and drilling sam ...
Plate Tectonics Inside Earth Chapter 1 Study
... Earth’s Interior 1) Compare constructive forces to destructive forces. Give an example of each. Constructive forces shape the surface by building up mountains and landmasses. Destructive forces are those that slowly wear away the mountains and, eventually, every other feature on the surface. 2) ...
... Earth’s Interior 1) Compare constructive forces to destructive forces. Give an example of each. Constructive forces shape the surface by building up mountains and landmasses. Destructive forces are those that slowly wear away the mountains and, eventually, every other feature on the surface. 2) ...
NOAA Mid Oceanic Ridges
... ridge divisions and finally labeling the ages of the oceanic crust from the Eastern Pacific Rise outward. (Use the time scale at the bottom left of the screen to determine how the color and age of crust relate.) Answer the following questions found underneath the interactive on that page. a. Where i ...
... ridge divisions and finally labeling the ages of the oceanic crust from the Eastern Pacific Rise outward. (Use the time scale at the bottom left of the screen to determine how the color and age of crust relate.) Answer the following questions found underneath the interactive on that page. a. Where i ...
Review Sheet for Test
... 17. Vertical Movement of the crust are divided into two types. Define and give one example of the following types of Vertical Movement of the Crust Uplift – The rising of regions of the Earth’s crust to higher elevations ...
... 17. Vertical Movement of the crust are divided into two types. Define and give one example of the following types of Vertical Movement of the Crust Uplift – The rising of regions of the Earth’s crust to higher elevations ...
Document
... created at mid-ocean ridges) contain magnetic minerals • These minerals align with the Earth’s magnetic field • The rocks record the direction of the magnetic field at the time that they cooled (below ~580°C) • The magnetic field reverses through time (magnetic north becomes magnetic south, etc.) ...
... created at mid-ocean ridges) contain magnetic minerals • These minerals align with the Earth’s magnetic field • The rocks record the direction of the magnetic field at the time that they cooled (below ~580°C) • The magnetic field reverses through time (magnetic north becomes magnetic south, etc.) ...
The two major areas of the ocean floor are the and the
... 13. The biggest problem scientists had with his hypothesis was the ________________ that caused the continents to drift. 14. Wegener’s explanation for how the continents moved was based on _________________ force. Living Machine (Part 3 and 4): 15. Wegener’s bold leap was to reconstruct a world wher ...
... 13. The biggest problem scientists had with his hypothesis was the ________________ that caused the continents to drift. 14. Wegener’s explanation for how the continents moved was based on _________________ force. Living Machine (Part 3 and 4): 15. Wegener’s bold leap was to reconstruct a world wher ...
Geomagnetic reversal
A geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged. The Earth's field has alternated between periods of normal polarity, in which the direction of the field was the same as the present direction, and reverse polarity, in which the field was the opposite. These periods are called chrons. The time spans of chrons are randomly distributed with most being between 0.1 and 1 million years with an average of 450,000 years. Most reversals are estimated to take between 1,000 and 10,000 years.The latest one, the Brunhes–Matuyama reversal, occurred 780,000 years ago;and may have happened very quickly, within a human lifetime. A brief complete reversal, known as the Laschamp event, occurred only 41,000 years ago during the last glacial period. That reversal lasted only about 440 years with the actual change of polarity lasting around 250 years. During this change the strength of the magnetic field dropped to 5% of its present strength. Brief disruptions that do not result in reversal are called geomagnetic excursions.