volcanic activity
... As plates move apart, fractures and faults are created. This results in major separations called rift zones. Most of the world’s rift volcanism occurs under water along deep ocean ridges. This results in a process referred to as seafloor spreading. Rift Volcanism can be observed above water in Icela ...
... As plates move apart, fractures and faults are created. This results in major separations called rift zones. Most of the world’s rift volcanism occurs under water along deep ocean ridges. This results in a process referred to as seafloor spreading. Rift Volcanism can be observed above water in Icela ...
Earthquakes - Science Media Centre of Canada
... noticeable except with sensitive instruments. A magnitude-‐7 is the cutoff between a moderate and severe earthquake. A magnitude-‐9 is a really big one and they're extremely rare. As a rule, the larger ...
... noticeable except with sensitive instruments. A magnitude-‐7 is the cutoff between a moderate and severe earthquake. A magnitude-‐9 is a really big one and they're extremely rare. As a rule, the larger ...
... Moon was derived from the impactor rather than from Earth’s mantle (e.g. Canup, 2008). To account for the identical oxygen isotope signatures of Earth and Moon Pahlevan and Stevenson (2007) proposed turbulent mixing and equilibration in the energetic aftermath of the giant impact. This mixing is tho ...
7-3 Summary
... Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other. • Plate tectonics suggests that Earth’s surface is divided into large plates of rigid rock and each plate moves over Earth’s hot and semiplastic mantle. ...
... Earth’s surface is made of rigid slabs of rock, or plates, that move with respect to each other. • Plate tectonics suggests that Earth’s surface is divided into large plates of rigid rock and each plate moves over Earth’s hot and semiplastic mantle. ...
Gravitational constraints Gravity anomalies
... The mantle is not strong, it flows in response to loads in order to achieve isostatic equilibrium However, small scale topography may not be in isostatic equilibrium The lithosphere is strong as can support smaller loads ...
... The mantle is not strong, it flows in response to loads in order to achieve isostatic equilibrium However, small scale topography may not be in isostatic equilibrium The lithosphere is strong as can support smaller loads ...
here
... Symmetric patterns (“stripes”) on either side of spreading center (mid-ocean ridge) indicated that the seafloor was moving in opposing directions, away from the central ridge axis and acting as giant “tape recorder” for magnetic reversals. Changes in width of a given stripe indicated changes in ...
... Symmetric patterns (“stripes”) on either side of spreading center (mid-ocean ridge) indicated that the seafloor was moving in opposing directions, away from the central ridge axis and acting as giant “tape recorder” for magnetic reversals. Changes in width of a given stripe indicated changes in ...
Name Jordan Sullivan Date October 6, 2014 Period 1 Plate
... Roll your mouse over the image to find the definitions of the words below: Continental Crust – the Earth’s crust that makes up the continents Mountain – a high, large mass of Earth and rock that rises above the earth’s surface with steep or sloping sides 2. At divergent boundaries, tectonic plates a ...
... Roll your mouse over the image to find the definitions of the words below: Continental Crust – the Earth’s crust that makes up the continents Mountain – a high, large mass of Earth and rock that rises above the earth’s surface with steep or sloping sides 2. At divergent boundaries, tectonic plates a ...
I. What are Earthquakes?
... C. Rock deforms in a plastic manner, like a piece of molded clay, or in an elastic manner, like a rubber band. D. Plastic deformation does not lead to earthquakes. Elastic deformation does. Like a rubber band, rock can be stretched only so far before it breaks. ...
... C. Rock deforms in a plastic manner, like a piece of molded clay, or in an elastic manner, like a rubber band. D. Plastic deformation does not lead to earthquakes. Elastic deformation does. Like a rubber band, rock can be stretched only so far before it breaks. ...
Tectonic activity – The essentials
... The earth is like a broken egg shell. These plates float on the mantle (molten material) in different directions a few cm/year. Plates meet at plate boundaries or margins ...
... The earth is like a broken egg shell. These plates float on the mantle (molten material) in different directions a few cm/year. Plates meet at plate boundaries or margins ...
Mechanical Waves
... An earthquake's destructive power varies depending on the composition of the ground in an area and the design and placement of manmade structures. The extent of damage is rated on the Mercalli Scale. Mercalli ratings, which are given as Roman numerals, are based on largely subjective interpretations ...
... An earthquake's destructive power varies depending on the composition of the ground in an area and the design and placement of manmade structures. The extent of damage is rated on the Mercalli Scale. Mercalli ratings, which are given as Roman numerals, are based on largely subjective interpretations ...
Restless Earth Revision Paper 1
... (caldera) whereas volcanoes are steep sided mountains with a crater. Scale Supervolcano would be on a larger scale and much more violent with global effects with thousands of tonnes more material emitted than a volcano. ...
... (caldera) whereas volcanoes are steep sided mountains with a crater. Scale Supervolcano would be on a larger scale and much more violent with global effects with thousands of tonnes more material emitted than a volcano. ...
Nonrenewable Mineral Resources
... pressures, chemically active fluids, or a combination of these agents. Examples include slate and marble. The interaction of physical and chemical processes that change rocks from one type to another is called the rock cycle. In this process, rocks are broken down, eroded, crushed, heated, melted, ...
... pressures, chemically active fluids, or a combination of these agents. Examples include slate and marble. The interaction of physical and chemical processes that change rocks from one type to another is called the rock cycle. In this process, rocks are broken down, eroded, crushed, heated, melted, ...
Plate Tectonics Power Point
... The oceanic plate slides under the continental plate because it has lower density, this is called subcuction. The South American Plate is being lifted up, creating the Andes mountains. Strong, destructive earthquakes and rapid uplift of mountain ranges are common in this region. These earthquakes ar ...
... The oceanic plate slides under the continental plate because it has lower density, this is called subcuction. The South American Plate is being lifted up, creating the Andes mountains. Strong, destructive earthquakes and rapid uplift of mountain ranges are common in this region. These earthquakes ar ...
Investigate Earthquakes, Volcanoes, and Mountain Formation
... Tell them that they will be working with the same teams and activity sheets in the Gottesman Hall of Planet Earth. Post a map of the world or place a globe at the front of the classroom. Distribute the worksheets to the respective teams, one packet per student. Go to the OLogy interactive “Plates on ...
... Tell them that they will be working with the same teams and activity sheets in the Gottesman Hall of Planet Earth. Post a map of the world or place a globe at the front of the classroom. Distribute the worksheets to the respective teams, one packet per student. Go to the OLogy interactive “Plates on ...
Earthquakes - collazocove
... Tension stress is a stress that pulls on the crust Compression stress is stress that squeezes rock until it folds or breaks Shearing is stress that pushes a mass of rock in two opposite directions. Sorry that again I cant fit a picture =[ ...
... Tension stress is a stress that pulls on the crust Compression stress is stress that squeezes rock until it folds or breaks Shearing is stress that pushes a mass of rock in two opposite directions. Sorry that again I cant fit a picture =[ ...
Continental Drift - Ashland Independent Schools
... The plant Glossopteris has been found on 5 separate land masses (Africa, Australia, India, South America, and Antarctica). The appearance of this plant on so many different continents also support Wegener’s idea that were once connected and had similar climates ...
... The plant Glossopteris has been found on 5 separate land masses (Africa, Australia, India, South America, and Antarctica). The appearance of this plant on so many different continents also support Wegener’s idea that were once connected and had similar climates ...
Geophysics
Geophysics /dʒiːoʊfɪzɪks/ is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term geophysics sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets.Although geophysics was only recognized as a separate discipline in the 19th century, its origins go back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics.Geophysics is applied to societal needs, such as mineral resources, mitigation of natural hazards and environmental protection. Geophysical survey data are used to analyze potential petroleum reservoirs and mineral deposits, locate groundwater, find archaeological relics, determine the thickness of glaciers and soils, and assess sites for environmental remediation.