Landforms and Waterways
... What are plate tectonics ? The crust of the earth is made of huge slabs of rock that move over the earth’s molten mantle, like a giant cracked egg Over millions of years the appearance of the surface of ...
... What are plate tectonics ? The crust of the earth is made of huge slabs of rock that move over the earth’s molten mantle, like a giant cracked egg Over millions of years the appearance of the surface of ...
Year 7 Georgraphy - Finborough School
... To understand the events at the transform boundaries of plates sliding past each other and build-up of pressure due to friction results in a sudden jolt. To learn the key terms: ...
... To understand the events at the transform boundaries of plates sliding past each other and build-up of pressure due to friction results in a sudden jolt. To learn the key terms: ...
Plate Tectonics - Yorkville CUSD 115
... Earth’s surface is divided into rigid plates that move relative to one another. Look at the map above. It shows Earth’s major plates and their boundaries. Notice how some boundaries are in the middle of the oceans. Many of these boundaries are located at mid-ocean ridges. The Pacific Plate is the la ...
... Earth’s surface is divided into rigid plates that move relative to one another. Look at the map above. It shows Earth’s major plates and their boundaries. Notice how some boundaries are in the middle of the oceans. Many of these boundaries are located at mid-ocean ridges. The Pacific Plate is the la ...
Endogenous Processes - Where Great Things Happen
... Endogenous forces are active internally. That is, they’re active beneath the crust. And they constantly make the crust move. Mountains or volcanoes are created. Earthquakes occur. Whole continents may be shifted. These actives affect the entire surface of the earth. The entire surface includes featu ...
... Endogenous forces are active internally. That is, they’re active beneath the crust. And they constantly make the crust move. Mountains or volcanoes are created. Earthquakes occur. Whole continents may be shifted. These actives affect the entire surface of the earth. The entire surface includes featu ...
AQA A Revision Guide – The Restless Earth
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
FREE Sample Here
... The hypothesis of continental drift was based on considerable geologic, paleontologic, and climatologic evidence. The hypothesis of seafloor spreading accounts for continental movement, and the idea that thermal convection cells provide a mechanism for plate movement. The three types of plate bounda ...
... The hypothesis of continental drift was based on considerable geologic, paleontologic, and climatologic evidence. The hypothesis of seafloor spreading accounts for continental movement, and the idea that thermal convection cells provide a mechanism for plate movement. The three types of plate bounda ...
The Earth`s Layers - Aspen View Academy
... • Fill a plastic dropper with some food coloring. Hold the dropper just under the waters surface and slightly away from the edge of the cup, gently squeeze a small droplet of the food coloring into the water. ...
... • Fill a plastic dropper with some food coloring. Hold the dropper just under the waters surface and slightly away from the edge of the cup, gently squeeze a small droplet of the food coloring into the water. ...
Make sure you label your diagrams and use arrows to show
... the words converge and diverge, have you created a convergent or divergent plate boundary? ____________________ ...
... the words converge and diverge, have you created a convergent or divergent plate boundary? ____________________ ...
Light: The Cosmic Messenger
... – Many of Earth’s features determined by size, distance from Sun, and rotation rate – Reason for plate tectonics still a mystery. – Maybe to the authors of our textbook, but wet rocks behave differently than dry rocks. This is well know to seismologist. ...
... – Many of Earth’s features determined by size, distance from Sun, and rotation rate – Reason for plate tectonics still a mystery. – Maybe to the authors of our textbook, but wet rocks behave differently than dry rocks. This is well know to seismologist. ...
Organizing What You Know About Earth`s Layers
... HINT: in order to correctly label temperature and density, remember: Temperature increases with depth and density decreases with depth. ...
... HINT: in order to correctly label temperature and density, remember: Temperature increases with depth and density decreases with depth. ...
Chapter 11 Notes: Section 1 How Rock Deforms
... • The circum-Pacific and the Eurasian-Melanesian mountain belts are both located along convergent plate boundaries. • Scientists think that the location of these two mountain belts provides evidence that most mountains form as a result of collisions between tectonic plates. ...
... • The circum-Pacific and the Eurasian-Melanesian mountain belts are both located along convergent plate boundaries. • Scientists think that the location of these two mountain belts provides evidence that most mountains form as a result of collisions between tectonic plates. ...
Teaching Earth Dynamics: What`s Wrong with Plate Tectonics Theory
... of having been joined in the past. Eduard Suess (1831-1914) envisioned a vast supercontinent that had broken up in the past with parts of it sinking into the ocean floor. Suess’ concept was subsequently recognized to be wrong because continental rock is less dense than ocean floor basalt rock and th ...
... of having been joined in the past. Eduard Suess (1831-1914) envisioned a vast supercontinent that had broken up in the past with parts of it sinking into the ocean floor. Suess’ concept was subsequently recognized to be wrong because continental rock is less dense than ocean floor basalt rock and th ...
6th Grade Earth Science
... meet. Spreading boundaries - plates move away from – _________________ each other • gaps form between the plates • __________________ Convection currents cause magma to rise between the gaps • Huge valleys ________ form Mid-Atlantic Ridge • Sea floor spreading – ex. _____________________ ...
... meet. Spreading boundaries - plates move away from – _________________ each other • gaps form between the plates • __________________ Convection currents cause magma to rise between the gaps • Huge valleys ________ form Mid-Atlantic Ridge • Sea floor spreading – ex. _____________________ ...
Ocean Basin Physiography
... morphology. 3. Abyssal plains are found near some "Atlantic" type continental margins where sediments from turbidity currents have flowed off the continental rise and spread out over the ocean floor producing extremely flat stretches of the ocean floor. Other features include seamounts (hills >1 km ...
... morphology. 3. Abyssal plains are found near some "Atlantic" type continental margins where sediments from turbidity currents have flowed off the continental rise and spread out over the ocean floor producing extremely flat stretches of the ocean floor. Other features include seamounts (hills >1 km ...
File - Real Ms. Frizzle
... Scientists called that very deep spot of magma a “Hot Spot” or a Mantle Plume. It was a stationary spot under the crust that had lots and lots of magma and energy. But here’s the crazy part: the crust IS NOT stationary! What that means is that as the crust moves over top the mantle plume, one or sev ...
... Scientists called that very deep spot of magma a “Hot Spot” or a Mantle Plume. It was a stationary spot under the crust that had lots and lots of magma and energy. But here’s the crazy part: the crust IS NOT stationary! What that means is that as the crust moves over top the mantle plume, one or sev ...
Geology Study Guide - Iowa City Community School District
... 1. Give evidence that Earth’s plates are moving. 2. What are the three ways Earth’s crusts can move in relation to one another? Be able to explain. ...
... 1. Give evidence that Earth’s plates are moving. 2. What are the three ways Earth’s crusts can move in relation to one another? Be able to explain. ...
1. What is the difference between a compositional layer and a
... Convention is the movement of matter that results from differences in density caused by variations in temperatures. As rock in the lower mantle is super heated, it becomes less dense and rises up through the mantle. Once it reaches the upper portion of the mantle it forces the cooler, more dense roc ...
... Convention is the movement of matter that results from differences in density caused by variations in temperatures. As rock in the lower mantle is super heated, it becomes less dense and rises up through the mantle. Once it reaches the upper portion of the mantle it forces the cooler, more dense roc ...
Slide 1
... • shortening and thickening of continental crust • silica-rich magmas (less dense) ascend and intrude rocks above • continued accretion cratons • modern-day exposed cratons are known as stable shields ...
... • shortening and thickening of continental crust • silica-rich magmas (less dense) ascend and intrude rocks above • continued accretion cratons • modern-day exposed cratons are known as stable shields ...
Earth`s Interior Reading Packet 1
... iike thick liquid or hot tar. As intense heat from the earth's core moves toward the surface through the mantle, it causes the material of the asthenosphere to circulate. Matter rises through certain parts of the asthenosphere. Then it cools and slowly sinks in other places. The result is a circular ...
... iike thick liquid or hot tar. As intense heat from the earth's core moves toward the surface through the mantle, it causes the material of the asthenosphere to circulate. Matter rises through certain parts of the asthenosphere. Then it cools and slowly sinks in other places. The result is a circular ...
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.