Unit 7 Earth`s Interior
... (Think the ocean has SALT…..BASALT!!) Basalt is much denser than the granite. Because of this the less dense continents ride on the denser oceanic plates. ...
... (Think the ocean has SALT…..BASALT!!) Basalt is much denser than the granite. Because of this the less dense continents ride on the denser oceanic plates. ...
Earth`s Crust in Motion – Study Guide
... Heat from the core and the mantle itself causes convection currents in the mantle. ...
... Heat from the core and the mantle itself causes convection currents in the mantle. ...
“Plate Tectonics Simulation”.
... Look for patterns in density, subduction, and volcanoes in the table. a) When a plate subducts what is always true about the density of the plate that subducts compared to the plate it subducts under? ______________________________________________________________________________ b) When volcanoes fo ...
... Look for patterns in density, subduction, and volcanoes in the table. a) When a plate subducts what is always true about the density of the plate that subducts compared to the plate it subducts under? ______________________________________________________________________________ b) When volcanoes fo ...
Plate Tectonics
... aesthenosphere, they interact among each other. The result of these interactions is the existence of 3 types of boundaries: ...
... aesthenosphere, they interact among each other. The result of these interactions is the existence of 3 types of boundaries: ...
Geology Review Sheet
... 2. Explain the steps of the rock cycle, how each type of rock forms, and the processes that form different types of rocks. Be able to describe how one rock transforms into another. 3. Explain the relationships between the type of plate boundary and the likely depth, magnitude, and intensity of an ea ...
... 2. Explain the steps of the rock cycle, how each type of rock forms, and the processes that form different types of rocks. Be able to describe how one rock transforms into another. 3. Explain the relationships between the type of plate boundary and the likely depth, magnitude, and intensity of an ea ...
Inside the Earth - Dade County Schools
... called sea-floor spreading. *At convergent plate boundaries known as subduction zones, a trench and deep earthquakes mark the zone where a slab of oceanic lithosphere descends into the mantle, and volcanoes and mountain ranges form on adjacent land. *When continental crust meets continental crust at ...
... called sea-floor spreading. *At convergent plate boundaries known as subduction zones, a trench and deep earthquakes mark the zone where a slab of oceanic lithosphere descends into the mantle, and volcanoes and mountain ranges form on adjacent land. *When continental crust meets continental crust at ...
Layers of the Earth Study Guide
... 6. It is composed (means made of) minerals and rocks and is mostly made of granite and basalt. 7. The part of the crust where the continents are is known as continental crust. This is the thickest part of the crust. 8. The part of the crust beneath the ocean water is known as the oceanic crust, th ...
... 6. It is composed (means made of) minerals and rocks and is mostly made of granite and basalt. 7. The part of the crust where the continents are is known as continental crust. This is the thickest part of the crust. 8. The part of the crust beneath the ocean water is known as the oceanic crust, th ...
Kelsey Beechler ERTH 201 Lab East African Rift Valley Rift valleys
... earthquakes and breakage to occur. Once this occurs, hot magma starts pushing up and causes pressure and bulging of the crust with magma convection. This pressure is ...
... earthquakes and breakage to occur. Once this occurs, hot magma starts pushing up and causes pressure and bulging of the crust with magma convection. This pressure is ...
1. List the 3 main layers of Earth from the most dense to the least
... 17. Draw arrows showing which direction convergent plates move relative to each other. ...
... 17. Draw arrows showing which direction convergent plates move relative to each other. ...
Plate Tectonics
... Plate Tectonics Go through the slide show at your own pace, do more research if you need to ...
... Plate Tectonics Go through the slide show at your own pace, do more research if you need to ...
Plate Tectonics Vocabulary PPP- Sidney
... strength followed by a rapid recovery after the new orientation has been established. These events occur on a scale of tens of thousands of years or longer, with the latest one (the Brunhes– Matuyama reversal) occurring 780,000 years ago ...
... strength followed by a rapid recovery after the new orientation has been established. These events occur on a scale of tens of thousands of years or longer, with the latest one (the Brunhes– Matuyama reversal) occurring 780,000 years ago ...
APES-Chapter-16-Geology-PPT-Part
... pushed together by internal forces; forms a trench • Transform Faults: occur where plates slide past one another; most are on the ocean floor ...
... pushed together by internal forces; forms a trench • Transform Faults: occur where plates slide past one another; most are on the ocean floor ...
Tectonic plates, Earthquakes, and the Earth`s guts
... demonstrate this. Melted cheese, melted chocolate, or thick gravy heated in a saucepan will form a crust on top that cracks and moves as the goop is heated. Note that the goop does not have to boil in order for “convection currents” to move the surface! Very slow convection currents in the mantle (r ...
... demonstrate this. Melted cheese, melted chocolate, or thick gravy heated in a saucepan will form a crust on top that cracks and moves as the goop is heated. Note that the goop does not have to boil in order for “convection currents” to move the surface! Very slow convection currents in the mantle (r ...
8.1: Earth has several layers
... broken into many large and small slabs of rock: “tectonic plates” Fit together like jigsaw puzzle, or a cracked egg shell – may be broken but still forms a “crust” around the egg itself Most large plates include both continental crust and oceanic crust Most of the thicker continental crust ris ...
... broken into many large and small slabs of rock: “tectonic plates” Fit together like jigsaw puzzle, or a cracked egg shell – may be broken but still forms a “crust” around the egg itself Most large plates include both continental crust and oceanic crust Most of the thicker continental crust ris ...
Plate Tectonics and Continental Accretion
... seen in subduction zones where on oceanic plate descends beneath a continental plate. Fragments of rocks forming the upper layers of the oceanic plate are scraped off the downgoing oceanic plate and become smeared onto the bottom and leading edge of the overriding continental plate. This process wor ...
... seen in subduction zones where on oceanic plate descends beneath a continental plate. Fragments of rocks forming the upper layers of the oceanic plate are scraped off the downgoing oceanic plate and become smeared onto the bottom and leading edge of the overriding continental plate. This process wor ...
Plate Tectonics and Continental Drift
... The oldest ocean floor crust is found at subduction zones, where old crust will be recycled back into magma. ...
... The oldest ocean floor crust is found at subduction zones, where old crust will be recycled back into magma. ...
Module Plate Tectonics
... 4. In our model of the Earth which materials would represent the lithosphere? The asthenosphere? Part 2: Use the floating materials to determine the various ways that pieces of lithosphere can interact. 5. What happens when you push the sponge and the foam together? What type of plate boundary does ...
... 4. In our model of the Earth which materials would represent the lithosphere? The asthenosphere? Part 2: Use the floating materials to determine the various ways that pieces of lithosphere can interact. 5. What happens when you push the sponge and the foam together? What type of plate boundary does ...
10A_InternalEarrthStructTectonics
... • During periods of supercontinent formation, an ice age often results • Sediments increase as continents collide • Removal of carbon dioxide out of the atmosphere by sediments leads to a decrease in global temperatures • Mountain building at equator upsets temperature balance • Causes decrease in t ...
... • During periods of supercontinent formation, an ice age often results • Sediments increase as continents collide • Removal of carbon dioxide out of the atmosphere by sediments leads to a decrease in global temperatures • Mountain building at equator upsets temperature balance • Causes decrease in t ...
GLY 150 Exam #1 STUDY GUIDE
... velocity of movement of one plate relative to another measured? How fast is London, England moving away from New York City, NY? What geologic features indicate the direction of plate motion? What is mantle convection? What are hotspots? How are these related to mantle plumes? Explain the origin of t ...
... velocity of movement of one plate relative to another measured? How fast is London, England moving away from New York City, NY? What geologic features indicate the direction of plate motion? What is mantle convection? What are hotspots? How are these related to mantle plumes? Explain the origin of t ...
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.