Restless earth mindm..
... mountains Oceanic plate and Continental plates push together, creating volcanoes ...
... mountains Oceanic plate and Continental plates push together, creating volcanoes ...
convection-and-the-mantel-1st-one-of-week-5
... out that the continents all fit together like a jigsaw puzzle. – Alfred Wegener was the first to hypothesize that earth continents moved. He was also the first to suggest that all of the continents drifted together to form Pangaea. – Pangaea: single landmass that broke apart 200 million years ago, ...
... out that the continents all fit together like a jigsaw puzzle. – Alfred Wegener was the first to hypothesize that earth continents moved. He was also the first to suggest that all of the continents drifted together to form Pangaea. – Pangaea: single landmass that broke apart 200 million years ago, ...
Plate Tectonics, Tectonic Plates Information, Facts, News, Photos
... crashed about 55 million years ago, slowly giving rise to the Himalaya, the highest mountain system on Earth. As the mash-up continues, the mountains get higher. Mount Everest, the highest point on Earth, may be a tiny bit taller tomorrow than it is today. These convergent boundaries also occur wher ...
... crashed about 55 million years ago, slowly giving rise to the Himalaya, the highest mountain system on Earth. As the mash-up continues, the mountains get higher. Mount Everest, the highest point on Earth, may be a tiny bit taller tomorrow than it is today. These convergent boundaries also occur wher ...
Key Terms for Theme 3 Aseismic Aseismig A description of buildings
... and Hawaii have this shape. ...
... and Hawaii have this shape. ...
Layers of the Earth - study notes
... Most of the earthquakes and volcanoes in the world occur where two plates meet. The most active area of volcanoes and earthquakes is called the Ring of Fire. It circles around the Pacific Ocean. The Atlantic Ocean is growing because the Mid Atlantic Ridge continues to separate. Magma seeps up ...
... Most of the earthquakes and volcanoes in the world occur where two plates meet. The most active area of volcanoes and earthquakes is called the Ring of Fire. It circles around the Pacific Ocean. The Atlantic Ocean is growing because the Mid Atlantic Ridge continues to separate. Magma seeps up ...
Inside the Earth
... • Consists of mostly “light” rocks (granite – below continents) (basalt – below oceans) • Oceans cover 71% of the crust (oceanic crust is very dense) • Continental crust is less dense ...
... • Consists of mostly “light” rocks (granite – below continents) (basalt – below oceans) • Oceans cover 71% of the crust (oceanic crust is very dense) • Continental crust is less dense ...
SECTION 1
... (d) It didn’t, it supports the plate tectonic theory (it came after Wegener’s continental drift theory). 4. Earthquakes occur at plate boundaries because large slabs of rock are trying to slide past each other or into each other. The rock resists this motion, and stress (pressure) builds up. When th ...
... (d) It didn’t, it supports the plate tectonic theory (it came after Wegener’s continental drift theory). 4. Earthquakes occur at plate boundaries because large slabs of rock are trying to slide past each other or into each other. The rock resists this motion, and stress (pressure) builds up. When th ...
Earth`s+Interior+Structure
... The topmost layer is the lithosphere, which is comprised of the crust and solid portion of the upper mantle. The lithosphere is divided into many plates that move in relation to each other due to tectonic forces. The lithosphere essentially floats atop a semi-liquid layer known as the asthenosphere. ...
... The topmost layer is the lithosphere, which is comprised of the crust and solid portion of the upper mantle. The lithosphere is divided into many plates that move in relation to each other due to tectonic forces. The lithosphere essentially floats atop a semi-liquid layer known as the asthenosphere. ...
File - Brighten Academy Middle School
... Describe which plate will sink below when an oceanic plate meets a continental plate. Tell why. ...
... Describe which plate will sink below when an oceanic plate meets a continental plate. Tell why. ...
Worksheet: Plate Tectonics
... Background: The Earth’s crust is divided into a series of plates that are continually moving, colliding or pulling apart relative to each other. The Earth’s crust consists of nine large plates and twelve smaller ones. The continents are in the continental plates and the oceanic plates make up much o ...
... Background: The Earth’s crust is divided into a series of plates that are continually moving, colliding or pulling apart relative to each other. The Earth’s crust consists of nine large plates and twelve smaller ones. The continents are in the continental plates and the oceanic plates make up much o ...
Plate Tectonics
... • The Earth’s rigid lithosphere is broken into plates that move on the pliable asthenosphere. • In 1912, Alfred Wegener, proposed this theory of continental drift (that the continents have moved over time). • By the 1970s this theory was well-accepted and explains why volcanoes and earthquakes occur ...
... • The Earth’s rigid lithosphere is broken into plates that move on the pliable asthenosphere. • In 1912, Alfred Wegener, proposed this theory of continental drift (that the continents have moved over time). • By the 1970s this theory was well-accepted and explains why volcanoes and earthquakes occur ...
Discuss on Sea Floor Evidence Submitted by WWW
... The magnetic anomalies coincide with the episodes of magnetic reversals that have been documented from studies on land, indicating that the andesitic rocks that form new oceanic crust in the tensional setting of the rift valley record the earth's magnetic field as they cool. A rock has a normal (pos ...
... The magnetic anomalies coincide with the episodes of magnetic reversals that have been documented from studies on land, indicating that the andesitic rocks that form new oceanic crust in the tensional setting of the rift valley record the earth's magnetic field as they cool. A rock has a normal (pos ...
Minerals, Rocks, Plate Tectonics Review
... 9. ____________________________________- layer of hot, solid material between the Earth’s crust and core. 10. ___________________________________- rigid layer consisting of the crust and uppermost part of the mantle. Broken into pieces called tectonic plates. 11. ___________________________________- ...
... 9. ____________________________________- layer of hot, solid material between the Earth’s crust and core. 10. ___________________________________- rigid layer consisting of the crust and uppermost part of the mantle. Broken into pieces called tectonic plates. 11. ___________________________________- ...
Theory of Plate Tectonics
... 13. In the chart below, compare the slab-pull and ridge-push mechanisms that produce the forces behind plate tectonics. slab-pull ...
... 13. In the chart below, compare the slab-pull and ridge-push mechanisms that produce the forces behind plate tectonics. slab-pull ...
tectonic plate boundaries
... As tectonic plates push, pull, or slip past each other, stress increases along breaks in the Earth’s faults crust, or ___________. In response to this stress, rock in the plates deforms _______________. Elastic deformation __________ _______________: Imagine a stretched rubber band. You can on ...
... As tectonic plates push, pull, or slip past each other, stress increases along breaks in the Earth’s faults crust, or ___________. In response to this stress, rock in the plates deforms _______________. Elastic deformation __________ _______________: Imagine a stretched rubber band. You can on ...
Study Guide – Earth`s Changing Crust
... 22) What is the plate tectonic theory? Earth’s crust is divided into plates that move around on the top of the mantle 23) Does heat & pressure increase or decrease the deeper you go into the Earth? Why? Increase because more magma which causes heat and it is trapped under the crust, more weight is o ...
... 22) What is the plate tectonic theory? Earth’s crust is divided into plates that move around on the top of the mantle 23) Does heat & pressure increase or decrease the deeper you go into the Earth? Why? Increase because more magma which causes heat and it is trapped under the crust, more weight is o ...
Science Ch 5 webnotes
... Theory of Continental Drift: continents were once together (Pangaea) and have drifted apart Evidence includes: mountains between South America and Africa match Fossils Coastlines Plate Tectonics: model to explain how ocean floor spreads and continents move Compression: squeezing together; creates fo ...
... Theory of Continental Drift: continents were once together (Pangaea) and have drifted apart Evidence includes: mountains between South America and Africa match Fossils Coastlines Plate Tectonics: model to explain how ocean floor spreads and continents move Compression: squeezing together; creates fo ...
Continental growth spurts were all before 1 Ga
... Continents; the missing link The lower crust is transient It is recycled 6 times faster than upper crust Recent arc growth estimates are 5X previous estimates! Therefore, a huge previously unaccounted for flux ...
... Continents; the missing link The lower crust is transient It is recycled 6 times faster than upper crust Recent arc growth estimates are 5X previous estimates! Therefore, a huge previously unaccounted for flux ...
Take Home Test #12 (13 Questions) Complete the following on your
... C. The gravitational pull of the moon forces the plates to move more rapidly away from each other. D. Plate motion causes the continents on the earth to shrink. 7) Which of the following processes describes the interactions between plates that cause volcanoes? A. Two continental crusts pushing up ag ...
... C. The gravitational pull of the moon forces the plates to move more rapidly away from each other. D. Plate motion causes the continents on the earth to shrink. 7) Which of the following processes describes the interactions between plates that cause volcanoes? A. Two continental crusts pushing up ag ...
PowerPoint Presentation - Oceanic
... that move about the surface of the asthenosphere. Lithosphere- The rigid outer layer of the earth, including the curst and uppermost mantle. Asthenosphere- A layer of hot, weak material located in the mantle between a depth of 100 and 350 kilometers. The rock within this zone is easily deformed. ...
... that move about the surface of the asthenosphere. Lithosphere- The rigid outer layer of the earth, including the curst and uppermost mantle. Asthenosphere- A layer of hot, weak material located in the mantle between a depth of 100 and 350 kilometers. The rock within this zone is easily deformed. ...
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.