Document
... Slab Push Hypothesis • Magma rising along the mid oceanic ridge exerts a force that pushes an oceanic plate away from the ridge. • The force of gravity causes plate movement by pulling cooler, denser oceanic plates down toward the mantle. • Slab push and pull work together with convection currents ...
... Slab Push Hypothesis • Magma rising along the mid oceanic ridge exerts a force that pushes an oceanic plate away from the ridge. • The force of gravity causes plate movement by pulling cooler, denser oceanic plates down toward the mantle. • Slab push and pull work together with convection currents ...
Plate Tectonics
... • Transform boundaries happen when two plates are sideswiping each other (in very slow motion). • Major earthquakes occur as these boundaries slip past each other. • The plates may be stuck for years, then suddenly break free and move several inches or even feet. ...
... • Transform boundaries happen when two plates are sideswiping each other (in very slow motion). • Major earthquakes occur as these boundaries slip past each other. • The plates may be stuck for years, then suddenly break free and move several inches or even feet. ...
Earth and Space Science (Plate Tectonics)
... Sea-Floor Spreading Compression Tension Folding Fault ...
... Sea-Floor Spreading Compression Tension Folding Fault ...
plate tectonics
... Your notes will be graded Prepare for an extra credit ROLE PLAY exercise. You may be selected to play the role of Alfred Wegener at the International Geology Summit. You will have to convince your fellow scientists that the continents are moving. ...
... Your notes will be graded Prepare for an extra credit ROLE PLAY exercise. You may be selected to play the role of Alfred Wegener at the International Geology Summit. You will have to convince your fellow scientists that the continents are moving. ...
Inside the Earth
... • Roughly 2800 km thick • No one has ever drilled to the mantle • It is VERY hot • composed of silicate rocks that are rich in iron and magnesium • Even though its solid it can flow ...
... • Roughly 2800 km thick • No one has ever drilled to the mantle • It is VERY hot • composed of silicate rocks that are rich in iron and magnesium • Even though its solid it can flow ...
Chapter 5 Section 1
... • Divided into 2 layers 1. Upper Mantle a. Lithosphere – crust and uppermost part of the mantle; about 100 km thick b. Asthenosphere – upper mantle just below the lithosphere a. Hotter and under more pressure b. Softer/bends like plastic (but still solid) ...
... • Divided into 2 layers 1. Upper Mantle a. Lithosphere – crust and uppermost part of the mantle; about 100 km thick b. Asthenosphere – upper mantle just below the lithosphere a. Hotter and under more pressure b. Softer/bends like plastic (but still solid) ...
Summing-up - interactive eBook
... to the volcanic activity that is visible on the surface, there are continuous emissions of lava on the ocean floor along more than 60,000 km of the ocean ridges. ■■ Volcanic activity can manifest itself in very different ways, but essentially it is a unitary phenomenon, its distribution on the Earth ...
... to the volcanic activity that is visible on the surface, there are continuous emissions of lava on the ocean floor along more than 60,000 km of the ocean ridges. ■■ Volcanic activity can manifest itself in very different ways, but essentially it is a unitary phenomenon, its distribution on the Earth ...
Plate motion, earthquakes, and volcanoes
... convection cell can happen in a single place in the middle of a plate and create a hot spot/island Example: Hawaii ...
... convection cell can happen in a single place in the middle of a plate and create a hot spot/island Example: Hawaii ...
Notes on Rocks and Volcanoes
... b. examples: Ship Rock, NM; Devil’s Tower, WY; Kimberly diamond mines of South Africa 7.1 Volcanoes and Plate Tectonics 1.What happens when melted rock in the crust? -__________________, slowly pushes up due to being less dense than solid crust sometimes rising to the surface in the form of lava -th ...
... b. examples: Ship Rock, NM; Devil’s Tower, WY; Kimberly diamond mines of South Africa 7.1 Volcanoes and Plate Tectonics 1.What happens when melted rock in the crust? -__________________, slowly pushes up due to being less dense than solid crust sometimes rising to the surface in the form of lava -th ...
Kerbstone identification guide
... Kerbstone identification guide The kerbstones we’re interested in for our #kerbsurvey are almost all either igneous or sedimentary. Use this guide to identify what type of rock you have and, if you can, guess where it may have come from! ...
... Kerbstone identification guide The kerbstones we’re interested in for our #kerbsurvey are almost all either igneous or sedimentary. Use this guide to identify what type of rock you have and, if you can, guess where it may have come from! ...
magma
... 1. Igneous Rocks (Fact: Igneous means “fiery”) a. How they form: When magma reaches the surface, it becomes lava. b. This hot, molten rock cools and hardens to form igneous rock. c. Characteristics: Igneous rocks vary in size, shape, color, and texture. Examples: basalt, pumice, obsidian ...
... 1. Igneous Rocks (Fact: Igneous means “fiery”) a. How they form: When magma reaches the surface, it becomes lava. b. This hot, molten rock cools and hardens to form igneous rock. c. Characteristics: Igneous rocks vary in size, shape, color, and texture. Examples: basalt, pumice, obsidian ...
The Theory of Plate Tectonics
... b. When an oceanic plate slides under a continental plate, a deep ocean forms. Near the trench, a line of ...
... b. When an oceanic plate slides under a continental plate, a deep ocean forms. Near the trench, a line of ...
Olivia-module3
... The gravitational potential energy available in this collapse could have brought the mass of Earth to a temperature exceeding 30000K –- a plasma primordial Earth? ...
... The gravitational potential energy available in this collapse could have brought the mass of Earth to a temperature exceeding 30000K –- a plasma primordial Earth? ...
Plate Tectonics Summary - Leigh
... The locations of the plate boundaries can be seen by mapping the locations of the Earth’s volcanoes and earthquakes. Divergent plate boundaries are where two plates move apart. Early on this divergence creates a rift zone (or rift valley on land) where the surface breaks and drops as the two plates ...
... The locations of the plate boundaries can be seen by mapping the locations of the Earth’s volcanoes and earthquakes. Divergent plate boundaries are where two plates move apart. Early on this divergence creates a rift zone (or rift valley on land) where the surface breaks and drops as the two plates ...
Chapter 6 Study Guide
... A(n) _____________ happens when an explosive eruption hurls ash, cinders, bombs, and gases out of a volcano. When plate movement causes the crust to bend downward, what is formed? __________________ A _______ is a weak spot in the crust where magma comes through. Liquid magma flows upward through th ...
... A(n) _____________ happens when an explosive eruption hurls ash, cinders, bombs, and gases out of a volcano. When plate movement causes the crust to bend downward, what is formed? __________________ A _______ is a weak spot in the crust where magma comes through. Liquid magma flows upward through th ...
Exam 1
... d. extinct paleo-margin 12. The most likely mechanism causing the crustal plates to move is thought to be produced by a. convection cells in the mantle b. oceanic currents c. rotation or the earth d. tidal forces ...
... d. extinct paleo-margin 12. The most likely mechanism causing the crustal plates to move is thought to be produced by a. convection cells in the mantle b. oceanic currents c. rotation or the earth d. tidal forces ...
Plate Tectonics Definition
... which lie at the center of the basin. The existence of these ridges is due to low density of the hot asthenosphere, which lifts the thin oceanic crust above it (Figure 4). As rock continues to solidify on either side the ridge, the oceanic crust moves away from the divergent boundary analogous to a ...
... which lie at the center of the basin. The existence of these ridges is due to low density of the hot asthenosphere, which lifts the thin oceanic crust above it (Figure 4). As rock continues to solidify on either side the ridge, the oceanic crust moves away from the divergent boundary analogous to a ...
to view the Slideshow
... molten rock will rise and if it breaks through the lithosphere it will create a volcano. It is important to note that since part of the lithosphere is being lost at this point, there must be some other point on the earth where new land is being created, remember ...
... molten rock will rise and if it breaks through the lithosphere it will create a volcano. It is important to note that since part of the lithosphere is being lost at this point, there must be some other point on the earth where new land is being created, remember ...
plate tectonics
... – Think of the hypotheses of continental drift and sea-floor spreading as clues to a mystery. – How can the two hypotheses be explained? • In the 1960’s, geologists developed a new theory to explain the apparent movement of the continents. • The theory of plate tectonics suggests that Earth’s crust ...
... – Think of the hypotheses of continental drift and sea-floor spreading as clues to a mystery. – How can the two hypotheses be explained? • In the 1960’s, geologists developed a new theory to explain the apparent movement of the continents. • The theory of plate tectonics suggests that Earth’s crust ...
Sedimentary Rocks
... 1. Igneous rocks … from cooling and solidification of lava or magma 2. Sedimentary rocks … from compacted and cemented sediments, or chemical precipitates or evaporites 3. Metamorphic rocks … meta (change) morphic (form) … rocks changed by heat and pressure –but remain solid ...
... 1. Igneous rocks … from cooling and solidification of lava or magma 2. Sedimentary rocks … from compacted and cemented sediments, or chemical precipitates or evaporites 3. Metamorphic rocks … meta (change) morphic (form) … rocks changed by heat and pressure –but remain solid ...
Plate Tectonics Tutoiral Questions
... In the 1930s, most scientists believed that Earth’s crust and interior were solid and motionless. A small group of scientists were talking about “continental drift,” which is the idea that Earth’s crust is not stationary, but is constantly shifting and moving. From seismic data, geophysical evidence ...
... In the 1930s, most scientists believed that Earth’s crust and interior were solid and motionless. A small group of scientists were talking about “continental drift,” which is the idea that Earth’s crust is not stationary, but is constantly shifting and moving. From seismic data, geophysical evidence ...
PHYSICAL GEOLOGY
... know on sight several minerals and rocks that commonly occur on the earth’s surface distinguish the major classes of rocks and explain their origin understand the various processes of physical and chemical weathering and be able to recognize them in the field explain the different agents of erosion ...
... know on sight several minerals and rocks that commonly occur on the earth’s surface distinguish the major classes of rocks and explain their origin understand the various processes of physical and chemical weathering and be able to recognize them in the field explain the different agents of erosion ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.