Chapter 5 - Mrs. Wiley`s Environmental Science Site
... Fossil- Glossopteris Climate- glacial grooves, glacial sediments Rock- volcanic rock in S. America and Africa AND the Appalachian/Caledonian mountains. What do the alternating magnetic bands of basalt on the seafloor show? That seafloor spreading is actually happening. What drives plate motion? Conv ...
... Fossil- Glossopteris Climate- glacial grooves, glacial sediments Rock- volcanic rock in S. America and Africa AND the Appalachian/Caledonian mountains. What do the alternating magnetic bands of basalt on the seafloor show? That seafloor spreading is actually happening. What drives plate motion? Conv ...
Introduction to Oceanography 112
... 35. Which layer constitutes (makes up) the vertical extent of a plate? a. Crust b. Lithosphere 36. What defines the lithosphere? a. It behaves in a brittle manner by breaking like ceramic material under stress b. It behaves in a plastic manner by deforming without breaking under stress ...
... 35. Which layer constitutes (makes up) the vertical extent of a plate? a. Crust b. Lithosphere 36. What defines the lithosphere? a. It behaves in a brittle manner by breaking like ceramic material under stress b. It behaves in a plastic manner by deforming without breaking under stress ...
It describes the steps you use during an experiment.
... near the center of continents along bodies of water along plate boundaries in mountainous areas ...
... near the center of continents along bodies of water along plate boundaries in mountainous areas ...
Powerpoint Presentation Physical Geology, 10/e
... of brittle crust “floating” on upper mantle – Thicker blocks of lower density crust have deeper “roots” and float higher (as mountains) ...
... of brittle crust “floating” on upper mantle – Thicker blocks of lower density crust have deeper “roots” and float higher (as mountains) ...
TOPIC WORD DEFINITION Volcanoes aftershock An earthquake
... in which layers of lava alternate with layers of ash and other volcanic materials. The hypothesis that the continents slowly move across Earth’s surface. The movement of a fluid, caused by differences ...
... in which layers of lava alternate with layers of ash and other volcanic materials. The hypothesis that the continents slowly move across Earth’s surface. The movement of a fluid, caused by differences ...
Euler poles
... Present day plate motions (velocities) We use a) spreading rates and b) transform fault azimuths (or earthquake slip vectors) to determine Euler vectors 1) Transform faults should form small circles about the rotation pole position 2) Perpendiculars to transform faults should all intersect at the p ...
... Present day plate motions (velocities) We use a) spreading rates and b) transform fault azimuths (or earthquake slip vectors) to determine Euler vectors 1) Transform faults should form small circles about the rotation pole position 2) Perpendiculars to transform faults should all intersect at the p ...
Notes: tectonics
... order of magnitude smaller than the ridge push force. These driving forces must be counterbalanced by resisting forces to obtain a zero acceleration of the plate. The most likely resisting force is drag by the mantle below the lithosphere and around the slab, and frictional resistance at the contact ...
... order of magnitude smaller than the ridge push force. These driving forces must be counterbalanced by resisting forces to obtain a zero acceleration of the plate. The most likely resisting force is drag by the mantle below the lithosphere and around the slab, and frictional resistance at the contact ...
Tectonic Landscapes Edexcel GCSE Unit 2
... plates are pulling away from the Arabian Plate. The East African Rift valley is opening up and new land is boundaries in land being formed in the bottom of the valley. The rift is a narrow zone in which the African Plate is in the process of splitting into two new tectonic plates. It includes a numb ...
... plates are pulling away from the Arabian Plate. The East African Rift valley is opening up and new land is boundaries in land being formed in the bottom of the valley. The rift is a narrow zone in which the African Plate is in the process of splitting into two new tectonic plates. It includes a numb ...
Carib x SGI sett.2010
... At the moment, even if the acquired facts can be considered enough for an evolution outline, a lot of different order problems remain open or insufficiently explained, so that the related models seem to be far too speculative. ...
... At the moment, even if the acquired facts can be considered enough for an evolution outline, a lot of different order problems remain open or insufficiently explained, so that the related models seem to be far too speculative. ...
Plate Tectonics Lab Activity The theory of plate tectonics states that
... 2. Name a specific location on the Earth where this kind of boundary activity takes place. ...
... 2. Name a specific location on the Earth where this kind of boundary activity takes place. ...
Plate Tectonics - Flushing High School
... type of plate boundary, and how plates move in relation to each other. Refer to Figure 1, a map of the major plates and boundaries, and Figure 2, a map of earthquake distribution and depth. There are three basic types of plate boundaries: DIVERGENT (constructive) plate boundaries form when two plate ...
... type of plate boundary, and how plates move in relation to each other. Refer to Figure 1, a map of the major plates and boundaries, and Figure 2, a map of earthquake distribution and depth. There are three basic types of plate boundaries: DIVERGENT (constructive) plate boundaries form when two plate ...
Untitled - Triumph Learning
... a fluid absorbs heat energy, that region expands and becomes lighter. The warm fluid floats upward as cooler, heavier fluid sinks beneath it. This process creates circular convection currents of warmer fluid rising and cooler fluid sinking. Because rock in the asthenosphere is so soft, it can transf ...
... a fluid absorbs heat energy, that region expands and becomes lighter. The warm fluid floats upward as cooler, heavier fluid sinks beneath it. This process creates circular convection currents of warmer fluid rising and cooler fluid sinking. Because rock in the asthenosphere is so soft, it can transf ...
Earth-Science-Test-Week-9
... b. A logging company wants to cut down a large part of a forest from a mountainside. The people from the village below will earn badly needed money by working for the company, but cutting down the trees will put the region at risk of mass wasting. You plan to write a letter to the company expressing ...
... b. A logging company wants to cut down a large part of a forest from a mountainside. The people from the village below will earn badly needed money by working for the company, but cutting down the trees will put the region at risk of mass wasting. You plan to write a letter to the company expressing ...
Slide 1
... California Earthquakes’ • California lies on the junction of the Pacific Plate and North America Plate. As these two plates slip past each other the movement triggers earthquakes. Florida is situated virtually in the middle of the North America plate and is therefore seismically ...
... California Earthquakes’ • California lies on the junction of the Pacific Plate and North America Plate. As these two plates slip past each other the movement triggers earthquakes. Florida is situated virtually in the middle of the North America plate and is therefore seismically ...
Earth structure & magnetism
... • Every so often the magnetic field will reverse. • When it does, so will the minerals in the igneous rocks that form at the time. Stacked lava flows (layers) Rocks at places where new crust is forming (Sea floor spreading = stripes) ...
... • Every so often the magnetic field will reverse. • When it does, so will the minerals in the igneous rocks that form at the time. Stacked lava flows (layers) Rocks at places where new crust is forming (Sea floor spreading = stripes) ...
The Martian Dichotomy - Department of Earth and Space Sciences
... slope down to the south. -This is opposite of the expected slope direction, if formed by an ocean shore. -Slopes are most likely due to volcanic compression. ...
... slope down to the south. -This is opposite of the expected slope direction, if formed by an ocean shore. -Slopes are most likely due to volcanic compression. ...
The Living Planet PPT
... changed into a new substance as a result of interaction between elements in the air or water and minerals in the rock ...
... changed into a new substance as a result of interaction between elements in the air or water and minerals in the rock ...
12.710, Spring 2014, Problem Set 5, Isostacy Isostacy is the concept
... Surprisingly, the simple relationship between extension, isostacy, and basin formation was only appreciated in the 1970's, after plate tectonics began to be accepted; this despite the fact the all of the world's petroleum resources are derived from sedimentary rocks deposited in basins formed throug ...
... Surprisingly, the simple relationship between extension, isostacy, and basin formation was only appreciated in the 1970's, after plate tectonics began to be accepted; this despite the fact the all of the world's petroleum resources are derived from sedimentary rocks deposited in basins formed throug ...
Plate Tectonics and Reality
... Gravity is a secondary driving force for the movement of the Earth's tectonic plates. At mid-ocean ridges the elevation is higher than the surrounding ocean floor. As the convection currents within the Earth cause new lithospheric material to rise and spread away from the ridge, gravity causes the o ...
... Gravity is a secondary driving force for the movement of the Earth's tectonic plates. At mid-ocean ridges the elevation is higher than the surrounding ocean floor. As the convection currents within the Earth cause new lithospheric material to rise and spread away from the ridge, gravity causes the o ...
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.