Name Class___________ Date Grade 7 Science: Benchmark #2
... 3. The most active earthquake areas are associated with the boundaries of lithospheric plates. Explain what happens to the lithospheric plates at these boundaries that causes an ...
... 3. The most active earthquake areas are associated with the boundaries of lithospheric plates. Explain what happens to the lithospheric plates at these boundaries that causes an ...
Upper mantle flow beneath - Pages perso de
... times of 1.5 to more than 2.0 s suggest coherent mantle flow over large mantle thicknesses and since the observed fast directions are parallel to the trend of the lithospheric structures but also close to the trend of the plate motion, we propose that both the lithosphere and the asthenosphere may a ...
... times of 1.5 to more than 2.0 s suggest coherent mantle flow over large mantle thicknesses and since the observed fast directions are parallel to the trend of the lithospheric structures but also close to the trend of the plate motion, we propose that both the lithosphere and the asthenosphere may a ...
Chemistry of Igneous Rocks
... lava flowing over the land, and, u it cools, solidifying into the fine-grained, black rock we call basalt. Basalt is an igneous rock, rock that has solidified from magma. Magma is molten rock, usually rich in silica and containing dissolved gasses. (Lava is magma on the earth's surface.) Igneous roc ...
... lava flowing over the land, and, u it cools, solidifying into the fine-grained, black rock we call basalt. Basalt is an igneous rock, rock that has solidified from magma. Magma is molten rock, usually rich in silica and containing dissolved gasses. (Lava is magma on the earth's surface.) Igneous roc ...
AE-December-2016-04-BS-14
... 11. In locations with continuous permafrost the active layer never melts. 12. Engineering solutions for problems with permafrost include thermosyphons and insulation to aid in melting of permafrost. 13. An aquifer is an impermeable layer which serves as a confining layer above an aquiclude which has ...
... 11. In locations with continuous permafrost the active layer never melts. 12. Engineering solutions for problems with permafrost include thermosyphons and insulation to aid in melting of permafrost. 13. An aquifer is an impermeable layer which serves as a confining layer above an aquiclude which has ...
Volcanoes
... Effects of Volcanic activity • builds up mountains and new land; also destroys land - (Lithosphere-aka. GEOSPHERE) • destroys many living things - (biosphere) • ejects ash and gases into the air blocking sunlight (exosphere) • Changes weather and climate patterns for several months to a year - (atm ...
... Effects of Volcanic activity • builds up mountains and new land; also destroys land - (Lithosphere-aka. GEOSPHERE) • destroys many living things - (biosphere) • ejects ash and gases into the air blocking sunlight (exosphere) • Changes weather and climate patterns for several months to a year - (atm ...
Poster on PPT
... crustal plates and how they interact. Since these plates move, they may hit each other, move away from each other, or slide across each other. As it relates to the Pacific Ring of Fire, convergent plate movements are the most applicable to understanding the disasters in this part of the world. Conve ...
... crustal plates and how they interact. Since these plates move, they may hit each other, move away from each other, or slide across each other. As it relates to the Pacific Ring of Fire, convergent plate movements are the most applicable to understanding the disasters in this part of the world. Conve ...
rocks2
... fragments, organic remains, chemical deposits) – Metamorphic – formed when existing rocks are CHANGED by intense heat & pressure ...
... fragments, organic remains, chemical deposits) – Metamorphic – formed when existing rocks are CHANGED by intense heat & pressure ...
Implications of mantle plume structure for the evolution of flood basalts
... Morgan [1,2] suggested that continental flood basalts appear as the first volcanic expression of new mantle plumes. Experimental studies in viscous liquids have shown that new, or "starting", plumes should consist of a large bulbous head followed by a narrow feeder conduit. Analysis of the plume flo ...
... Morgan [1,2] suggested that continental flood basalts appear as the first volcanic expression of new mantle plumes. Experimental studies in viscous liquids have shown that new, or "starting", plumes should consist of a large bulbous head followed by a narrow feeder conduit. Analysis of the plume flo ...
ONE THE PLATE TECTONICS REVOLUTION
... No schoolchild who looks at a globe can help but be struck by an observation as simple as it is obvious: South America and Africa would µt together if they could be slid magically toward each other. Surely this is not a coincidence; surely these two continents were at one time joined. Upon learning ...
... No schoolchild who looks at a globe can help but be struck by an observation as simple as it is obvious: South America and Africa would µt together if they could be slid magically toward each other. Surely this is not a coincidence; surely these two continents were at one time joined. Upon learning ...
Homework 1 Due: 4/20/07 RELATIVE DATING
... Many of the observations used to establish the relative timing of geological events require some knowledge of the three types of rocks: igneous, metamorphic and sedimentary. In order to provide a brief practical overview of these rock types, a few representative examples of each type will be on disp ...
... Many of the observations used to establish the relative timing of geological events require some knowledge of the three types of rocks: igneous, metamorphic and sedimentary. In order to provide a brief practical overview of these rock types, a few representative examples of each type will be on disp ...
Chapter 20 PowerPoint
... • Earth’s elevations cluster around two intervals: 0 to 1 km above sea level and 4 to 5 km below sea level. These modes reflect the differences in density and thickness of the crust. • Isostasy is a condition of equilibrium. According to this principle, the mass of a mountain above Earth’s surface i ...
... • Earth’s elevations cluster around two intervals: 0 to 1 km above sea level and 4 to 5 km below sea level. These modes reflect the differences in density and thickness of the crust. • Isostasy is a condition of equilibrium. According to this principle, the mass of a mountain above Earth’s surface i ...
Earth Science - Ms. Harper`s Science Class
... processes that change it • Oceanography -- study of earth’s oceans ...
... processes that change it • Oceanography -- study of earth’s oceans ...
Plate Tectonics and Global Impacts – Tutorial Script - FOG
... the North American continent is moving over the Pacific Ocean and causing the eastern edge of that ocean to subduct, including the subduction of a seafloor spreading center. The zone between the two active spreading centers is just one big transform boundary that connects the two – what used to be b ...
... the North American continent is moving over the Pacific Ocean and causing the eastern edge of that ocean to subduct, including the subduction of a seafloor spreading center. The zone between the two active spreading centers is just one big transform boundary that connects the two – what used to be b ...
Plate Tectonics Review
... downward into the mantle beneath the edge of the other plate at a convergent plate boundary. ...
... downward into the mantle beneath the edge of the other plate at a convergent plate boundary. ...
4 Igneous Rocks - North Coast Distance Education
... These volatiles are important because they strongly influence the viscosity and melting point of a magma and the types of volcanic activity that can be produced. Dissolved water tends to decrease the viscosity of magma by breaking the Si-O bonds, which may otherwise form long, complex chains. Magmas ...
... These volatiles are important because they strongly influence the viscosity and melting point of a magma and the types of volcanic activity that can be produced. Dissolved water tends to decrease the viscosity of magma by breaking the Si-O bonds, which may otherwise form long, complex chains. Magmas ...
EARTHQUAKES - NVHSEarthScienceKDudenhausen
... • Surface waves – seismic waves that travel along the ground, move up and down or side-to-side. Te most destructive of all earthquake waves. • P waves – push-pull waves, they compress and expand rocks in the direction the waves travel. This type of wave is called compressional or longitudinal waves. ...
... • Surface waves – seismic waves that travel along the ground, move up and down or side-to-side. Te most destructive of all earthquake waves. • P waves – push-pull waves, they compress and expand rocks in the direction the waves travel. This type of wave is called compressional or longitudinal waves. ...
Pangaea CC Reading
... plants'and'animals'lived'along'the'Eastern'coast'of' South'America,'as'did'along'the'Western'coast'of'Africa,'as'did'other'places.''With'this' over'whelming'evidence,'it'became'clear'that'at'some'point'many'millions'of'years'ago,' these'continents'must'have'in'fact'been'connected.'' Scientists'now'b ...
... plants'and'animals'lived'along'the'Eastern'coast'of' South'America,'as'did'along'the'Western'coast'of'Africa,'as'did'other'places.''With'this' over'whelming'evidence,'it'became'clear'that'at'some'point'many'millions'of'years'ago,' these'continents'must'have'in'fact'been'connected.'' Scientists'now'b ...
Pangaea CC Reading
... plants and animals lived along the Eastern coast of South America, as did along the Western coast of Africa, as did other places. With this over whelming evidence, it became clear that at some ...
... plants and animals lived along the Eastern coast of South America, as did along the Western coast of Africa, as did other places. With this over whelming evidence, it became clear that at some ...
Minerals, Rocks and Resources Outline
... • Organic sedimentary rock contain the accumulation of plant and animal remains – Fossils are commonly found • Chemical sedimentary rocks are deposited by the settling of materials from solution in seawater – This occurs during the evaporation of seawater and when chemical reactions in the water for ...
... • Organic sedimentary rock contain the accumulation of plant and animal remains – Fossils are commonly found • Chemical sedimentary rocks are deposited by the settling of materials from solution in seawater – This occurs during the evaporation of seawater and when chemical reactions in the water for ...
Session 4
... Mountains in the northwestern United States? Both provide dramatic evidence of plate tectonics in the form of volcanoes and earthquakes. In this session, we investigate how these phenomena are connected to the movement of plates. As we examine what happens at and between plate boundaries, our focus ...
... Mountains in the northwestern United States? Both provide dramatic evidence of plate tectonics in the form of volcanoes and earthquakes. In this session, we investigate how these phenomena are connected to the movement of plates. As we examine what happens at and between plate boundaries, our focus ...
Igneous Geology - Illinois Wesleyan University
... (mainly bubbles) textures. • If a lava doesn't crystallize, but instead just gets cold and very viscous, you get volcanic glass obsidian • Porphyries are common, due to ex-solution at shallow depths or magma loitering in a magma chamber before eruption. ...
... (mainly bubbles) textures. • If a lava doesn't crystallize, but instead just gets cold and very viscous, you get volcanic glass obsidian • Porphyries are common, due to ex-solution at shallow depths or magma loitering in a magma chamber before eruption. ...
Chapter 4 Rocks: Mixtures of Minerals
... the time it took to cool. Magma contains many different types of minerals in it that will solidify at different rates. Magma forms if either the pressure or temperature increases or the mineral composition changes. Glassy – The magma was shock cooled (very rapid cooling) Ex.: Obsidian Fine Grained – ...
... the time it took to cool. Magma contains many different types of minerals in it that will solidify at different rates. Magma forms if either the pressure or temperature increases or the mineral composition changes. Glassy – The magma was shock cooled (very rapid cooling) Ex.: Obsidian Fine Grained – ...
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.