Pre-Test
... surface. The magma that is deeper within Earth is hotter, which means it is less dense. It causes the magma to rise towards the surface. As it gets closer to the surface, the magma cools, increases in density and sinks again causing a convection cycle to occur. This movement causes the tectonic plat ...
... surface. The magma that is deeper within Earth is hotter, which means it is less dense. It causes the magma to rise towards the surface. As it gets closer to the surface, the magma cools, increases in density and sinks again causing a convection cycle to occur. This movement causes the tectonic plat ...
Geography - Peacehaven Community School
... Most Tsunamis are caused by earthquakes generated on a destructive plate boundary. The friction between the subducting and overriding plates is enormous. The friction prevents a slow and steady rate of movement and the two plates become ‘stuck’ ...
... Most Tsunamis are caused by earthquakes generated on a destructive plate boundary. The friction between the subducting and overriding plates is enormous. The friction prevents a slow and steady rate of movement and the two plates become ‘stuck’ ...
Assessment 3.2 – Plate Tectonics
... 2. Any one of the internally rigid crustal blocks of the lithosphere which move horizontally across the Earth’s surface relative to one another is known as a. Tectonic Plates b. Asthenosphere c. Outer Core d. Inner Core 3. Tectonic plates that are not moving directly toward or directly away from eac ...
... 2. Any one of the internally rigid crustal blocks of the lithosphere which move horizontally across the Earth’s surface relative to one another is known as a. Tectonic Plates b. Asthenosphere c. Outer Core d. Inner Core 3. Tectonic plates that are not moving directly toward or directly away from eac ...
Evidence for plate tectonics
... Describe the processes that formed the ocean basins and the seafloor (bathymetry) Define what convection currents are and explain the process that creates them Identify the three types of plate boundaries and the ...
... Describe the processes that formed the ocean basins and the seafloor (bathymetry) Define what convection currents are and explain the process that creates them Identify the three types of plate boundaries and the ...
Plate Tectonics-DONE
... Who originated the theory of Pangaea? Alfred Wegener invented the theory of Pangaea. Alfred proposed that the continents were once compressed into one proto continent, which he then called Pangaea. A Pangaea is the name of a single landmass that broke apart 200 million years ago and gave rise to to ...
... Who originated the theory of Pangaea? Alfred Wegener invented the theory of Pangaea. Alfred proposed that the continents were once compressed into one proto continent, which he then called Pangaea. A Pangaea is the name of a single landmass that broke apart 200 million years ago and gave rise to to ...
Earth Science Pages 190-196
... ***The Earth is made up of three layers—the crust, the mantle, and the core— based on chemical composition. Less dense compounds make up the crust and mantle. Denser compounds make up the core. ***The Earth is made up of five main physical layers: the lithosphere, the asthenosphere, the mesosphere, ...
... ***The Earth is made up of three layers—the crust, the mantle, and the core— based on chemical composition. Less dense compounds make up the crust and mantle. Denser compounds make up the core. ***The Earth is made up of five main physical layers: the lithosphere, the asthenosphere, the mesosphere, ...
Module E: Unit 4, Lesson 1 – Earth`s Layers
... • Oceanic crust is denser than continental crust because it contains almost twice as much iron, calcium, and magnesium. • The mantle is located between the crust and the core. • The mantle is a region of hot, slow-flowing solid rock. • The mantle contains more magnesium and less aluminum and silicon ...
... • Oceanic crust is denser than continental crust because it contains almost twice as much iron, calcium, and magnesium. • The mantle is located between the crust and the core. • The mantle is a region of hot, slow-flowing solid rock. • The mantle contains more magnesium and less aluminum and silicon ...
Document
... _____ 16. Subduction is the movement of one tectonic plate a. against another. b. over another. c. under another. d. away from another. _____ 17. As descending oceanic crust scrapes past the continental crust a. its temperature and pressure increase. b. it forms a lava fountain. c. it forms a volcan ...
... _____ 16. Subduction is the movement of one tectonic plate a. against another. b. over another. c. under another. d. away from another. _____ 17. As descending oceanic crust scrapes past the continental crust a. its temperature and pressure increase. b. it forms a lava fountain. c. it forms a volcan ...
Plate tectonics: Metamorphic myth
... or so rigid tectonic plates. Movement and subduction of these plates into the mantle governs nearly all geological processes, such as earthquakes, mountain building and even atmospheric composition. However, it is unclear when plate tectonics began. Today, subduction forms blueschistfacies metamorph ...
... or so rigid tectonic plates. Movement and subduction of these plates into the mantle governs nearly all geological processes, such as earthquakes, mountain building and even atmospheric composition. However, it is unclear when plate tectonics began. Today, subduction forms blueschistfacies metamorph ...
Earth Layer`s PPT
... Made up of more iron and magnesium so is very dense • Convection currents occur in the mantle ...
... Made up of more iron and magnesium so is very dense • Convection currents occur in the mantle ...
PTYS/ASTR 206 – Section 2 - Lunar and Planetary Laboratory
... Mark the appropriate answer in the appropriate place (i.e. in numbers 1-15) on the scantron sheet. Use a number 2 pencil. Be sure to write your name and fill in the ovals, in the upper left. #1. Which of the following is NOT a source of Earth’s own internal heat? A) Radioactive decay of elements wit ...
... Mark the appropriate answer in the appropriate place (i.e. in numbers 1-15) on the scantron sheet. Use a number 2 pencil. Be sure to write your name and fill in the ovals, in the upper left. #1. Which of the following is NOT a source of Earth’s own internal heat? A) Radioactive decay of elements wit ...
Plate Tectonics WebQuest
... I. Task One for the day: Go to the following website and work your way through the pages (please turn the volume on your computer OFF at this time). It will be much easier for you to complete some of these questions if you turn to the tectonic plates map in either your green or orange books. (Orange ...
... I. Task One for the day: Go to the following website and work your way through the pages (please turn the volume on your computer OFF at this time). It will be much easier for you to complete some of these questions if you turn to the tectonic plates map in either your green or orange books. (Orange ...
Plate: a rigid slab of solid lithosphere rock that has defined
... A steep sided valley formed when a block of the earth’s crust falls down getween two parallel fault lines; also know as a graben. 1. What sets the continental plates in motion? Describe the process. Convention currents (heat rising) in the asthenosphere expand and migrate to the surface while cooler ...
... A steep sided valley formed when a block of the earth’s crust falls down getween two parallel fault lines; also know as a graben. 1. What sets the continental plates in motion? Describe the process. Convention currents (heat rising) in the asthenosphere expand and migrate to the surface while cooler ...
Unit Vocab
... stated that continents were once one big supercontinent that drifted apart over many years to their present-day locations Pangaea: name given to the super-continent Mid-Atlantic Ridge: ridge in the Atlantic Ocean through which molten rock flows Sea-Floor Spreading: process where new crustal material ...
... stated that continents were once one big supercontinent that drifted apart over many years to their present-day locations Pangaea: name given to the super-continent Mid-Atlantic Ridge: ridge in the Atlantic Ocean through which molten rock flows Sea-Floor Spreading: process where new crustal material ...
File
... the mantle, setting the outer crust into motion. Once the descending plate starts to cool and fall, it becomes more dense, and essentially pulls the rest of the plate along after it in a process called slab pull. Convection currents in the asthenosphere are thus set in motion by the transfer of ener ...
... the mantle, setting the outer crust into motion. Once the descending plate starts to cool and fall, it becomes more dense, and essentially pulls the rest of the plate along after it in a process called slab pull. Convection currents in the asthenosphere are thus set in motion by the transfer of ener ...
Layers PangaeaCont drift Convection
... the flame. We are not able to see them, however, without special help like the light from a projector. Convection is the transfer of heat by the MOVEMENT of the heated parts of a liquid or gas. ...
... the flame. We are not able to see them, however, without special help like the light from a projector. Convection is the transfer of heat by the MOVEMENT of the heated parts of a liquid or gas. ...
Earthquakes Intro. Paragraph By: Isabelle Jones BANG! BOOM! Did
... mantle and crust. (Figure 2) The crust and the top of the mantle make up a thin skin on the surface of our planet. But this skin is not all in one piece – it is made up of many pieces like a puzzle covering the surface of the earth. (Figure 3) Not only that, but these puzzle pieces keep slowly movin ...
... mantle and crust. (Figure 2) The crust and the top of the mantle make up a thin skin on the surface of our planet. But this skin is not all in one piece – it is made up of many pieces like a puzzle covering the surface of the earth. (Figure 3) Not only that, but these puzzle pieces keep slowly movin ...
Document
... Isostatic Equilibrium Lab Why does the Earth have high places (the continents) and low places (the ocean basins)? What controls the elevation of mountains, lowlands, and various regions of the ocean floor? Answer: parts of the crust vary in thickness & density. Adopted from a presentation by Ray Re ...
... Isostatic Equilibrium Lab Why does the Earth have high places (the continents) and low places (the ocean basins)? What controls the elevation of mountains, lowlands, and various regions of the ocean floor? Answer: parts of the crust vary in thickness & density. Adopted from a presentation by Ray Re ...
Tectonic Plate Boundary Map
... Slide #4 is the tectonic plate boundary map. Color your map to outline all of the plate boundaries. The boundaries are shown in RED. 4. Use the geological time scale to calculate how long the Permian period lasted. ...
... Slide #4 is the tectonic plate boundary map. Color your map to outline all of the plate boundaries. The boundaries are shown in RED. 4. Use the geological time scale to calculate how long the Permian period lasted. ...
what to know outline dynamic crust ig met rocks
... The outward transfer of Earth’s internal heat drives __________________ ________ in the mantle that moves lithospheric plates that make up the Earth’s surface. The Earth’s interior is separated into layers based on _______________ with the most dense being ______________________________. The three t ...
... The outward transfer of Earth’s internal heat drives __________________ ________ in the mantle that moves lithospheric plates that make up the Earth’s surface. The Earth’s interior is separated into layers based on _______________ with the most dense being ______________________________. The three t ...
Earth`s Layers FOLDABLE© Question Sheet
... 4. The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called ___________________________________. ...
... 4. The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called ___________________________________. ...
Continental Drift
... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
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.