Lecture 2 - Early Earth and Plate Tectonics
... Seafloor rocks, and mantle rocks beneath them, cool and become more dense with distance from mid-oceanic ridge When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones ...
... Seafloor rocks, and mantle rocks beneath them, cool and become more dense with distance from mid-oceanic ridge When sufficiently cool and dense, these rocks may sink back into the mantle at subduction zones ...
Earth Science Learning Outcomes
... 4. explain the movement of three types of seismic waves (primary, secondary, and surface waves) through the layers of the Earth’s crust 5. describe tectonic plate boundaries, including: transform boundaries, divergent boundaries, and convergent boundaries 6. identify tectonic mapping symbols 7. expl ...
... 4. explain the movement of three types of seismic waves (primary, secondary, and surface waves) through the layers of the Earth’s crust 5. describe tectonic plate boundaries, including: transform boundaries, divergent boundaries, and convergent boundaries 6. identify tectonic mapping symbols 7. expl ...
8.2: Continents change position over time
... Hot soft rock rises, cools, and sinks, then is heated and rises again: convection current – slow few cm/yr ...
... Hot soft rock rises, cools, and sinks, then is heated and rises again: convection current – slow few cm/yr ...
How the Earth`s Surface Changes
... other it forms earthquakes and volcanoes on the crust • When plates slide past each other it forms earthquakes, mountains, and volcanoes on the crust ...
... other it forms earthquakes and volcanoes on the crust • When plates slide past each other it forms earthquakes, mountains, and volcanoes on the crust ...
review for exams questions from page 855 - Oraib al
... • Most have poor, sandy soil and little fresh water. ...
... • Most have poor, sandy soil and little fresh water. ...
Our Dynamic Earth
... heavy material, but continental plates are made of light, thicker material. • Some plates move apart (divergent), overlap (convergent) and rub against each other (transform). • These all lead up to mountains, volcanoes, ocean trenches and earthquakes. ...
... heavy material, but continental plates are made of light, thicker material. • Some plates move apart (divergent), overlap (convergent) and rub against each other (transform). • These all lead up to mountains, volcanoes, ocean trenches and earthquakes. ...
mantle
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
... Asthenosphere—the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick. Basalt— a hard, black volcanic rock with less than about 52 weight percent silica (SiO2) and high amounts of heavy elements like iron and magnesium and low sod ...
History of Lake District Geology
... By 300 Mya at the end of the Carboniferous, all the Earth's continents were combined into one supercontinent called Pangea with the UK now on the equator and with a hot, arid climate. More erosion occurred with red sands, shales and evaporites, such as gypsum, laid down over the next 50 to 60 milli ...
... By 300 Mya at the end of the Carboniferous, all the Earth's continents were combined into one supercontinent called Pangea with the UK now on the equator and with a hot, arid climate. More erosion occurred with red sands, shales and evaporites, such as gypsum, laid down over the next 50 to 60 milli ...
layers-of-the-earth-d-rl-2016
... _____ 11. What are seismic waves? a. movements in the outer core b. pictures of the Earth’s interior c. vibrations from an earthquake d. vibrations from a seismograph 12. Will a seismic wave traveling through a solid go faster or slower than a ...
... _____ 11. What are seismic waves? a. movements in the outer core b. pictures of the Earth’s interior c. vibrations from an earthquake d. vibrations from a seismograph 12. Will a seismic wave traveling through a solid go faster or slower than a ...
THE EARTH`S LITHOSPHERE
... The density of the lithosphere is 3 tons/m3. It is stiff and the Earth’s internal heat spreads by conduction through it, since it is floating on a layer of concentrated magma on the surface of the mantle or “lithospheric mantle.” Seismic wave velocities in this layer are between 6.5 and 7.8 km per s ...
... The density of the lithosphere is 3 tons/m3. It is stiff and the Earth’s internal heat spreads by conduction through it, since it is floating on a layer of concentrated magma on the surface of the mantle or “lithospheric mantle.” Seismic wave velocities in this layer are between 6.5 and 7.8 km per s ...
Powerpoint Presentation Physical Geology, 10/e
... • Most meteorites are difficult to distinguish from terrestrial rocks • Meteorites fall randomly all over the Earth • The easiest place to locate dark, rocky meteorites is on an extensive plain of white ice and snow (e.g., Antarctic Ice Sheet) • A small number of meteorites appear to have come from ...
... • Most meteorites are difficult to distinguish from terrestrial rocks • Meteorites fall randomly all over the Earth • The easiest place to locate dark, rocky meteorites is on an extensive plain of white ice and snow (e.g., Antarctic Ice Sheet) • A small number of meteorites appear to have come from ...
EARTH (⊕) Structure of the Earth
... - deepest is 12 km (7.5 miles) in Russia - temp at bottom = 190oC or 375oF ! Seismology Seismology - science of shock waves - caused by earthquakes, volcanoes, etc. - shows density and boundary of regions Two basic types of seismic waves: Shear (S (S) waves: waves - material displaced side-to-side ...
... - deepest is 12 km (7.5 miles) in Russia - temp at bottom = 190oC or 375oF ! Seismology Seismology - science of shock waves - caused by earthquakes, volcanoes, etc. - shows density and boundary of regions Two basic types of seismic waves: Shear (S (S) waves: waves - material displaced side-to-side ...
Chapter 25 The Geology of the Cenozoic Era
... 50. During peak glaciation, the two principle ice sheets that covered North America were the ___________ ice sheet to the northeast, and the ____________ ice sheet to the northwest. 51. The chronology of the _______________ _______ is particularly well known, because it is the most recent glacial ag ...
... 50. During peak glaciation, the two principle ice sheets that covered North America were the ___________ ice sheet to the northeast, and the ____________ ice sheet to the northwest. 51. The chronology of the _______________ _______ is particularly well known, because it is the most recent glacial ag ...
Past Climates
... Much of the discussion about contemporary climate change concerns whether or not the observed warming of the 20th century was part of a ”natural recovery” from the Little Ice Age. ...
... Much of the discussion about contemporary climate change concerns whether or not the observed warming of the 20th century was part of a ”natural recovery” from the Little Ice Age. ...
SPHERES
... heterogenous mixture. The dense geosphere is also subdivided into the crust, mantle, and core. Pedosphere is the outermost layer of the Earth that is composed of soil and subject to soil formation processes. It exists at the interface of the lithosphere, atmosphere, hydrosphere and biosphere. Ionosp ...
... heterogenous mixture. The dense geosphere is also subdivided into the crust, mantle, and core. Pedosphere is the outermost layer of the Earth that is composed of soil and subject to soil formation processes. It exists at the interface of the lithosphere, atmosphere, hydrosphere and biosphere. Ionosp ...
Decision One: Concept Map and Learning Unit
... Essential Question of the Culminating Activity: By observing graphics of landforms, can we apply what we’ve learned to determine which weathering process formed various landforms? Paragraph Description of Culminating Activity: Have the students collect magazine and newspaper articles and photographs ...
... Essential Question of the Culminating Activity: By observing graphics of landforms, can we apply what we’ve learned to determine which weathering process formed various landforms? Paragraph Description of Culminating Activity: Have the students collect magazine and newspaper articles and photographs ...
Microsoft Word document
... state to become ice when cooled to its freezing point. Earth's polar regions consist largely of ice, and exhibit dramatic changes in ice coverage in response to seasonal changes in temperature. An increase in temperature resulting from global warming could drastically affect the extent of polar ice. ...
... state to become ice when cooled to its freezing point. Earth's polar regions consist largely of ice, and exhibit dramatic changes in ice coverage in response to seasonal changes in temperature. An increase in temperature resulting from global warming could drastically affect the extent of polar ice. ...
Earth Science EOG Review
... fossil of an organism that existed for only a short period of time Helpful in determining age of rock layers (relative dating) Ice Core: vertical or tubular columns of ice Name the two ways that ice core help us learn about Earth’s history? Understand how climate has changed over time Concentration ...
... fossil of an organism that existed for only a short period of time Helpful in determining age of rock layers (relative dating) Ice Core: vertical or tubular columns of ice Name the two ways that ice core help us learn about Earth’s history? Understand how climate has changed over time Concentration ...
Layers of Earth`s Interior Continental Drift/Seafloor
... liquid magma, convection currents flow ...
... liquid magma, convection currents flow ...
When Continents Collide by Ole Hendrickson Slow
... For 2 million years glacial and inter-glacial periods alternated quickly, lasting about 40 thousand years each. But during the past million years the cycles lengthened to 100 thousand years. Intense cold periods created continental-scale ice sheets. The last of these, the Laurentide Ice Sheet, flowe ...
... For 2 million years glacial and inter-glacial periods alternated quickly, lasting about 40 thousand years each. But during the past million years the cycles lengthened to 100 thousand years. Intense cold periods created continental-scale ice sheets. The last of these, the Laurentide Ice Sheet, flowe ...
Constructive and Destructive Landforms
... Running water-rivers form canyons Groundwater-underground water forms caves/caverns Glaciers-rocks are carried under a glacier. Wind-rock particles are blown Ocean currents-sand is moved along a beach by waves. ...
... Running water-rivers form canyons Groundwater-underground water forms caves/caverns Glaciers-rocks are carried under a glacier. Wind-rock particles are blown Ocean currents-sand is moved along a beach by waves. ...
Plate Tectonics
... sliding past each crashing, sea floor spreading other,↑↓, strikesubduction zone newest sea floor slip, earthquakes Features created at each boundary include: Mountains, Mid-ocean ridges, Hawaiian Islands were not Volcanoes, Trenches, Rift valleys & created by plate movement Pangaea…one landmass ...
... sliding past each crashing, sea floor spreading other,↑↓, strikesubduction zone newest sea floor slip, earthquakes Features created at each boundary include: Mountains, Mid-ocean ridges, Hawaiian Islands were not Volcanoes, Trenches, Rift valleys & created by plate movement Pangaea…one landmass ...
Plate Tectonics - Department of Physics and Astronomy
... convection of soft, hot rocks deep within the planet. ...
... convection of soft, hot rocks deep within the planet. ...
Post-glacial rebound
Post-glacial rebound (sometimes called continental rebound) is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostatic depression. Post-glacial rebound and isostatic depression are different parts of a process known as either glacial isostasy, glacial isostatic adjustment, or glacioisostasy. Glacioisostasy is the solid Earth deformation associated with changes in ice mass distribution. The most obvious and direct affects of post-glacial rebound are readily apparent in northern Europe (especially Scotland, Estonia, Latvia, Fennoscandia, and northern Denmark), Siberia, Canada, the Great Lakes of Canada and the United States, the coastal region of the US state of Maine, parts of Patagonia, and Antarctica. However, through processes known as ocean siphoning and continental levering, the effects of post-glacial rebound on sea-level are felt globally far from the locations of current and former ice sheets.