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... ____4___ Oceanic crust gets subducted into the deep ocean trench ____5___ Old ocean crust gets “recycled” as it turns back into molten material in the asthenosphere ...
... ____4___ Oceanic crust gets subducted into the deep ocean trench ____5___ Old ocean crust gets “recycled” as it turns back into molten material in the asthenosphere ...
Chapter 7 Plate Tectonics
... more magnesium and less aluminum than the crust. This makes the mantle denser than the crust. No one has ever visited the mantle. The crust is too thick to drill through to reach the mantle. Therefore, scientists must use observations of Earth’s surface to draw conclusions about the mantle. In some ...
... more magnesium and less aluminum than the crust. This makes the mantle denser than the crust. No one has ever visited the mantle. The crust is too thick to drill through to reach the mantle. Therefore, scientists must use observations of Earth’s surface to draw conclusions about the mantle. In some ...
Continents in Motion: The Search for a Unifying Theory
... ( ● Fig. 13.25). Tectonics involves large-scale forces originating within Earth that cause parts of the lithosphere to move around. In plate tectonics, the lithospheric plates move as distinct and discrete units. In some places they pull away from each other (diverge), in other places they push toge ...
... ( ● Fig. 13.25). Tectonics involves large-scale forces originating within Earth that cause parts of the lithosphere to move around. In plate tectonics, the lithospheric plates move as distinct and discrete units. In some places they pull away from each other (diverge), in other places they push toge ...
1. This question is about rocks. Look at the picture of a volcano. (a
... Liquid rock that erupts out of a volcano cools down to make a type of rock. What type of rock? Choose from: ...
... Liquid rock that erupts out of a volcano cools down to make a type of rock. What type of rock? Choose from: ...
Example or Rigor
... EQ: How do forces inside the Earth create earthquakes and volcanoes? EQ: What type of force causes earthquakes? ...
... EQ: How do forces inside the Earth create earthquakes and volcanoes? EQ: What type of force causes earthquakes? ...
Suggested Activities Processes that Shape the Earth: Earth`s
... 2. Use the rubber band to attach the marker to the ruler so that the marker tip extends beyond the end of the ruler by about one inch. 3. Lay the ruler on a table so that it extends about halfway over the edge. Tape the ruler securely in place. 4. Hold the paper in front of the marker so that the ma ...
... 2. Use the rubber band to attach the marker to the ruler so that the marker tip extends beyond the end of the ruler by about one inch. 3. Lay the ruler on a table so that it extends about halfway over the edge. Tape the ruler securely in place. 4. Hold the paper in front of the marker so that the ma ...
Plate Tectonics
... Scientists were surprised to find huge mountains and deep trenches when they mapped the seafloor. The mid-ocean ridges form majestic mountain ranges through the deep oceans (Figure 1.10). Deep sea trenches are found near chains of active volcanoes. These volcanoes can be at the edges of continents or ...
... Scientists were surprised to find huge mountains and deep trenches when they mapped the seafloor. The mid-ocean ridges form majestic mountain ranges through the deep oceans (Figure 1.10). Deep sea trenches are found near chains of active volcanoes. These volcanoes can be at the edges of continents or ...
Skills Worksheet Active Reading Section: The Geosphere Read the
... Read the passage below and answer the questions that follow. If we consider the physical properties of each layer, instead of chemistry, the Earth can be divided into five layers. Earth’s outer layer is the lithosphere. It is a cool, rigid layer, 15 km to 300 km thick, and includes the crust and upp ...
... Read the passage below and answer the questions that follow. If we consider the physical properties of each layer, instead of chemistry, the Earth can be divided into five layers. Earth’s outer layer is the lithosphere. It is a cool, rigid layer, 15 km to 300 km thick, and includes the crust and upp ...
UNIT PLAN 2A: PLATE TECTONICS
... Group students based upon available lab equipment – if supplies are a problem set the activity up as a set of centers. Remind students of the importance of accurate and detailed observations (especially since they will be whiteboarding the results. If the thyme settles to the bottom, mix it up ...
... Group students based upon available lab equipment – if supplies are a problem set the activity up as a set of centers. Remind students of the importance of accurate and detailed observations (especially since they will be whiteboarding the results. If the thyme settles to the bottom, mix it up ...
6.1 Earthquakes and
... Missouri in 1812 There is an ancient fault zone deep within the North American Plate along the Mississippi River region. China also has earthquakes in the middle of the Asian plate ...
... Missouri in 1812 There is an ancient fault zone deep within the North American Plate along the Mississippi River region. China also has earthquakes in the middle of the Asian plate ...
Tectonics and Geodynamics
... between two oceanic plates. They always commence as rifts in side the continents. The causes for such rifting remain unclear, but it is fiercely debated if they initiate in response to hot spots underneath the continents or in response to gravitational potential energy differences. A new spreading c ...
... between two oceanic plates. They always commence as rifts in side the continents. The causes for such rifting remain unclear, but it is fiercely debated if they initiate in response to hot spots underneath the continents or in response to gravitational potential energy differences. A new spreading c ...
Lexie Carletti
... There is in fact a relationship between earthquakes and volcanoes. A certain type of a plate boundary is called a subduction zone. Here an oceanic plate and a continental plate collide and the denser oceanic plate sinks or subducts under the other plate. Then, the oceanic plate starts to melt from i ...
... There is in fact a relationship between earthquakes and volcanoes. A certain type of a plate boundary is called a subduction zone. Here an oceanic plate and a continental plate collide and the denser oceanic plate sinks or subducts under the other plate. Then, the oceanic plate starts to melt from i ...
Chapter 13 - Volcanoes
... › May flow out of a vent, cool, and build up a cone of material that may become a mountain. ...
... › May flow out of a vent, cool, and build up a cone of material that may become a mountain. ...
Plate boudaries II
... during rifting, as more and more mafic gabbro and basalt is extruded and intruded into the granite. Over time it volumetrically overwhelms the amount of granite in the rift, and you have primarily just mafic igneous crust. • This crust subsides (Pratt isostacy) as a function of its density, which me ...
... during rifting, as more and more mafic gabbro and basalt is extruded and intruded into the granite. Over time it volumetrically overwhelms the amount of granite in the rift, and you have primarily just mafic igneous crust. • This crust subsides (Pratt isostacy) as a function of its density, which me ...
The world*s Plates expedition
... There are three different types of movement between plates: convergent, divergent, and transform. Convergent boundaries, plates move towards each other and collide. When they collide they form major mountain systems like the Himalayas. Also, when an oceanic plate collides with a continental plate, t ...
... There are three different types of movement between plates: convergent, divergent, and transform. Convergent boundaries, plates move towards each other and collide. When they collide they form major mountain systems like the Himalayas. Also, when an oceanic plate collides with a continental plate, t ...
OAA prep-
... Matter and energy (thermal, radioactive, seismic) are transferred through the interior of Earth; Behavior and properties of seismic waves; Mechanisms and techniques to indirectly study the composition of Earth’s interior; Interpretation of seismic wave speed data relative to depth within Earth or st ...
... Matter and energy (thermal, radioactive, seismic) are transferred through the interior of Earth; Behavior and properties of seismic waves; Mechanisms and techniques to indirectly study the composition of Earth’s interior; Interpretation of seismic wave speed data relative to depth within Earth or st ...
Olivia-module3
... About 4.6 billion years ago, the primordial Earth condensed from a cloud of planetesimals with a composition not unlike that of the chondritic meteorites we find that have fallen to Earth. ...
... About 4.6 billion years ago, the primordial Earth condensed from a cloud of planetesimals with a composition not unlike that of the chondritic meteorites we find that have fallen to Earth. ...
Answer
... A. An insect or very small animal is trapped in amber. B. A dinosaur falls into a mud pit and is gradually pressed into a mold of the sedimentary rock. C. A prehistoric bird’s egg is buried in the nest and ...
... A. An insect or very small animal is trapped in amber. B. A dinosaur falls into a mud pit and is gradually pressed into a mold of the sedimentary rock. C. A prehistoric bird’s egg is buried in the nest and ...
Chapter 8 Volcanoes Section 1, Why Volcanoes Form
... • Most volcanic activity on Earth happens at mid-ocean ridges. • Most divergent boundaries are underwater. • However, Iceland is an island that is being pulled apart by a midocean ridge. ...
... • Most volcanic activity on Earth happens at mid-ocean ridges. • Most divergent boundaries are underwater. • However, Iceland is an island that is being pulled apart by a midocean ridge. ...
The Role of Plate Tectonics in Earth Sciences
... Seafloor Spreading Formation of Ocean Floor and Passive Continental Margins ...
... Seafloor Spreading Formation of Ocean Floor and Passive Continental Margins ...
Seafloor Spreading: 100
... your points: Name two other types of evidence ► What are glacial and mountain ranges? ...
... your points: Name two other types of evidence ► What are glacial and mountain ranges? ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.