Ocean waves that wear away an island`s shoreline
... 9. The theory of continental drift states all the continents once were joined as a single supercontinent and have since drifted apart. 10. To support his theory, Alfred Wegener provided evidence from fossils, traces of anciet organisms preserved in rock. 11. The process of sea-floor spreading contin ...
... 9. The theory of continental drift states all the continents once were joined as a single supercontinent and have since drifted apart. 10. To support his theory, Alfred Wegener provided evidence from fossils, traces of anciet organisms preserved in rock. 11. The process of sea-floor spreading contin ...
Plate tectonics
... older rocks were farther from the ridge center and cooled as they moved outward. ...
... older rocks were farther from the ridge center and cooled as they moved outward. ...
Layers of the Earth, Continental Drift, and Plate Tectonic Overview
... 3. How do scientists know about the structure of the Earth's interior? Explain. 4. Explain the difference between the crust and the lithosphere. 5. List three puzzling occurrences that the theory of continental drift helped to explain, and describe how it explained them. 6. Explain why Wegener's the ...
... 3. How do scientists know about the structure of the Earth's interior? Explain. 4. Explain the difference between the crust and the lithosphere. 5. List three puzzling occurrences that the theory of continental drift helped to explain, and describe how it explained them. 6. Explain why Wegener's the ...
and at the subduction zones Lesser Antilles Subduction Zone
... silicon and oxygen) and oceanic (made of iron and magnesium) ...
... silicon and oxygen) and oceanic (made of iron and magnesium) ...
Chapter 17 Plate Tectonics Notes
... 1. Explain the theory of plate tectonics. 2. List the three types of plate boundaries and describe what happens at each. 3. The ocean floor has been compared to a conveyer belt. Defend this comparison. ...
... 1. Explain the theory of plate tectonics. 2. List the three types of plate boundaries and describe what happens at each. 3. The ocean floor has been compared to a conveyer belt. Defend this comparison. ...
Continental Drift
... 1. Explain the theory of plate tectonics. 2. List the three types of plate boundaries and describe what happens at each. 3. The ocean floor has been compared to a conveyer belt. Defend this comparison. ...
... 1. Explain the theory of plate tectonics. 2. List the three types of plate boundaries and describe what happens at each. 3. The ocean floor has been compared to a conveyer belt. Defend this comparison. ...
Earthquakes, Volcanoes, and Mountain building
... • 2 tectonic plates collide • 1 plate boundary is subducted or forced deeper into earth • Causes other slab to fold deeply • Hot magma can seep to surface of earth • Spreading of two plates can cause hot magma to rise to surface ...
... • 2 tectonic plates collide • 1 plate boundary is subducted or forced deeper into earth • Causes other slab to fold deeply • Hot magma can seep to surface of earth • Spreading of two plates can cause hot magma to rise to surface ...
Plate Tectonics
... • Wegner could NOT prove how the continents moved, thus scientists did NOT accept the Continental Drift theory. ...
... • Wegner could NOT prove how the continents moved, thus scientists did NOT accept the Continental Drift theory. ...
Chapter 7, Section 1 - Answer Key
... Heavier elements are pulled to the center of the Earth by gravity. The elements with less mass are further from the center. 4. List the three layers of the Earth, based on their chemical composition. Crust, mantle, core (outer and inner) 5. Complete Sentence - What three elements make up most of the ...
... Heavier elements are pulled to the center of the Earth by gravity. The elements with less mass are further from the center. 4. List the three layers of the Earth, based on their chemical composition. Crust, mantle, core (outer and inner) 5. Complete Sentence - What three elements make up most of the ...
Episodic crustal growth and mantle evolution
... through oceanic plateau accretion and underplating. During periods of more restricted twolayer convection the continental crust grows more slowly and only by arc accretion, while the upper mantle is progressively depleted. ...
... through oceanic plateau accretion and underplating. During periods of more restricted twolayer convection the continental crust grows more slowly and only by arc accretion, while the upper mantle is progressively depleted. ...
File
... 2. Fill out the small squares with the correct information for each of the main layers of Earth, using your textbook. 3. Cut out the layers. Cut out the small squares. Cut out the title. 4. Set the piece of construction paper in front of you – tall length. Glue the title in the bottom left corner of ...
... 2. Fill out the small squares with the correct information for each of the main layers of Earth, using your textbook. 3. Cut out the layers. Cut out the small squares. Cut out the title. 4. Set the piece of construction paper in front of you – tall length. Glue the title in the bottom left corner of ...
Changing Earth - Ms. Stinson's Science Class
... one another. When the plates interact, the result of their movement is seen at the plate boundaries , as in the figure above. Movement along any plate boundary means that changes must happen at other boundaries. What is happening to the Atlantic Ocean floor between the North American and African Pla ...
... one another. When the plates interact, the result of their movement is seen at the plate boundaries , as in the figure above. Movement along any plate boundary means that changes must happen at other boundaries. What is happening to the Atlantic Ocean floor between the North American and African Pla ...
Name:______________________________ o ___________________ Samples
... These rocks only form when molten material cools ___________________ o Magnetic strips The earth’s magnetic poles have ___________________ many times Evidence in the ___________________ on the ocean floor o Drilling Samples The samples far from the ridge are ___________________ The “youn ...
... These rocks only form when molten material cools ___________________ o Magnetic strips The earth’s magnetic poles have ___________________ many times Evidence in the ___________________ on the ocean floor o Drilling Samples The samples far from the ridge are ___________________ The “youn ...
continental drift / plate tectonics test review
... 13. So, as new rocks are formed along mid-ocean ridges, older rocks are subducted – and destroyed- into trenches. These processes balance, so that the size of the earth’s crust REMAINS CONSTANT ...
... 13. So, as new rocks are formed along mid-ocean ridges, older rocks are subducted – and destroyed- into trenches. These processes balance, so that the size of the earth’s crust REMAINS CONSTANT ...
test review
... 13. So, as new rocks are formed along mid-ocean ridges, older rocks are subducted – and destroyed- into trenches. These processes balance, so that the size of the earth’s crust REMAINS CONSTANT ...
... 13. So, as new rocks are formed along mid-ocean ridges, older rocks are subducted – and destroyed- into trenches. These processes balance, so that the size of the earth’s crust REMAINS CONSTANT ...
Part B - Bakersfield College
... • thinner and more dense plate subducts • subducted plates melt (160 km) below the surface, and magma rises • EQ’s occur along the subduction zone, and magma plumes rise • typically, the older plate will subduct (more dense) beneath younger plate material ...
... • thinner and more dense plate subducts • subducted plates melt (160 km) below the surface, and magma rises • EQ’s occur along the subduction zone, and magma plumes rise • typically, the older plate will subduct (more dense) beneath younger plate material ...
Plate Tectonics Study Guide – Key
... What theory states that pieces of Earths lithosphere are in constant, slow motion? Volcanic belts can form along __________ boundaries. ___________ ____________ in the asthenosphere cause the Earth’s plates to move. The place where to plates come together is called a ____________ ______________. Why ...
... What theory states that pieces of Earths lithosphere are in constant, slow motion? Volcanic belts can form along __________ boundaries. ___________ ____________ in the asthenosphere cause the Earth’s plates to move. The place where to plates come together is called a ____________ ______________. Why ...
Introduccon to PLATE TECTONICS
... • Not by drilling: we do not have the technology to reach the core or the mantle) – deepest well is about 11 km (11,000 m or ~ 7 mi) – thickness of the crust: • oceanic crust: around 5 km – cannot drill because we also have 5 km of ocean above it • con)nental crust: up to 80 km – too thic ...
... • Not by drilling: we do not have the technology to reach the core or the mantle) – deepest well is about 11 km (11,000 m or ~ 7 mi) – thickness of the crust: • oceanic crust: around 5 km – cannot drill because we also have 5 km of ocean above it • con)nental crust: up to 80 km – too thic ...
Quiz1 Earths interior and introduction
... A) Magma at the surface cooled and crystallized before anything in the interior B) Materials that make up the crust are less dense and rose to the top C) Churning and upheaval in the interior thrust crustal rocks toward the surface D) Meteorites impacting Earth deposited this material at the surface ...
... A) Magma at the surface cooled and crystallized before anything in the interior B) Materials that make up the crust are less dense and rose to the top C) Churning and upheaval in the interior thrust crustal rocks toward the surface D) Meteorites impacting Earth deposited this material at the surface ...
The Composition of the Earth The Earth is divided into three layers
... the Mantle from the ocean floor and from observations made on the Earth’s surface ...
... the Mantle from the ocean floor and from observations made on the Earth’s surface ...
Blakeley Jones GEOL 1104 Review 6 – Earth`s Interior and Plate
... 16) All of the following are evidence supporting the theory of plate tectonics except for ________. a. changes in the Moon's orbit due to shifting plates b. ocean floor drilling c. hot spots d. measurements of plate motions 19) Which one of the following most accurately describes the volcanoes of t ...
... 16) All of the following are evidence supporting the theory of plate tectonics except for ________. a. changes in the Moon's orbit due to shifting plates b. ocean floor drilling c. hot spots d. measurements of plate motions 19) Which one of the following most accurately describes the volcanoes of t ...
Mantle plume
A mantle plume is a mechanism proposed in 1971 to explain volcanic regions of the earth that were not thought to be explicable by the then-new theory of plate tectonics. Some such volcanic regions lie far from tectonic plate boundaries, for example, Hawaii. Others represent unusually large-volume volcanism, whether on plate boundaries, e.g. Iceland, or basalt floods such as the Deccan or Siberian traps.A mantle plume is posited to exist where hot rock nucleates at the core-mantle boundary and rises through the Earth's mantle becoming a diapir in the Earth's crust. The currently active volcanic centers are known as ""hot spots"". In particular, the concept that mantle plumes are fixed relative to one another, and anchored at the core-mantle boundary, was thought to provide a natural explanation for the time-progressive chains of older volcanoes seen extending out from some such hot spots, such as the Hawaiian–Emperor seamount chain.The hypothesis of mantle plumes from depth is not universally accepted as explaining all such volcanism. It has required progressive hypothesis-elaboration leading to variant propositions such as mini-plumes and pulsing plumes. Another hypothesis for unusual volcanic regions is the ""Plate model"". This proposes shallower, passive leakage of magma from the mantle onto the Earth's surface where extension of the lithosphere permits it, attributing most volcanism to plate tectonic processes, with volcanoes far from plate boundaries resulting from intraplate extension.