Å - Abbreviation for angstrom, a unit of length (10
... predominantly composed of quartz and feldspar. Derived from disintegration of granite. arroyo - Flat-floored, vertically walled channel of an intermittent stream typical of semiarid climates; often applied to such features of southwestern United States. Synonymous with wadi and wash. artesian water ...
... predominantly composed of quartz and feldspar. Derived from disintegration of granite. arroyo - Flat-floored, vertically walled channel of an intermittent stream typical of semiarid climates; often applied to such features of southwestern United States. Synonymous with wadi and wash. artesian water ...
Seafloor Spreading
... •! Alfred Wegener had a hypothesis that the continents drifted to their presentday locations. But, it was rejected by scientists because they couldn’t think of a force strong enough to move the continents. Seafloor spreading was a hypothesis created by Harry Hess; this was the theory that the seaflo ...
... •! Alfred Wegener had a hypothesis that the continents drifted to their presentday locations. But, it was rejected by scientists because they couldn’t think of a force strong enough to move the continents. Seafloor spreading was a hypothesis created by Harry Hess; this was the theory that the seaflo ...
Science Key Concepts
... Describe the structure of the four density layers of Earth (crust, mantle, outer core, inner core). Identify and compare the layers of Earth’s atmosphere Describe the components of the water cycle and recognize that it is powered by the Sun and affects weather patterns. Explain how unequal heating o ...
... Describe the structure of the four density layers of Earth (crust, mantle, outer core, inner core). Identify and compare the layers of Earth’s atmosphere Describe the components of the water cycle and recognize that it is powered by the Sun and affects weather patterns. Explain how unequal heating o ...
3-2 Earth`s Spreading Ocean Floor
... The Earth is made up of a dozen or so major plates and several minor plates. Tectonic plates are constantly on the move. The fastest plate races along at 15 centimeters (6 inches) per year while the slowest plates crawl at less than 2.5 centimeters (1 inch) per year. ...
... The Earth is made up of a dozen or so major plates and several minor plates. Tectonic plates are constantly on the move. The fastest plate races along at 15 centimeters (6 inches) per year while the slowest plates crawl at less than 2.5 centimeters (1 inch) per year. ...
Rocks and the Rock Cycle
... rocks from one kind to another over long periods of time. But what are these igneous, sedimentary, and metamorphic rocks anyway? ...
... rocks from one kind to another over long periods of time. But what are these igneous, sedimentary, and metamorphic rocks anyway? ...
Seafloor spreading model
... the Earth’s mantle (Journey Through Earth and Convection in a Pan). They revisit what they know about how earthquakes are created, by the sudden release of energy as plates collide or rub together (but not so much when they split apart). They look for patterns in their world maps, observing that mid ...
... the Earth’s mantle (Journey Through Earth and Convection in a Pan). They revisit what they know about how earthquakes are created, by the sudden release of energy as plates collide or rub together (but not so much when they split apart). They look for patterns in their world maps, observing that mid ...
Darcy flow
... LAB 5b: DARCY FLOW AND STOKES FLOW The viscosity of a fluid describes its resistance to deformation. Water has a very low viscosity: the force of gravity causes it to flow immediately. Honey has a higher viscosity. The viscosities of Earth materials largely control mantle convection and therefore vo ...
... LAB 5b: DARCY FLOW AND STOKES FLOW The viscosity of a fluid describes its resistance to deformation. Water has a very low viscosity: the force of gravity causes it to flow immediately. Honey has a higher viscosity. The viscosities of Earth materials largely control mantle convection and therefore vo ...
Plate Tectonic Lab
... BACKGROUND INFORMATION: The main force that shapes our planet’s surface over long amounts of time is the movement of Earth's outer layer by the process of plate tectonics. The rigid outer layer of the Earth, called the lithosphere, is made of plates that fit together like a jigsaw puzzle. These plat ...
... BACKGROUND INFORMATION: The main force that shapes our planet’s surface over long amounts of time is the movement of Earth's outer layer by the process of plate tectonics. The rigid outer layer of the Earth, called the lithosphere, is made of plates that fit together like a jigsaw puzzle. These plat ...
A short, data oriented summary of
... (shallower water). Even before plate tectonics, this long linear feature was described as a “midocean ridge.” This is because the lithosphere is hottest at a spreading center, so thermal expansion makes its elevation higher. Hot mantle rocks rise into the space left by the separating plates and form ...
... (shallower water). Even before plate tectonics, this long linear feature was described as a “midocean ridge.” This is because the lithosphere is hottest at a spreading center, so thermal expansion makes its elevation higher. Hot mantle rocks rise into the space left by the separating plates and form ...
Continental Drift & Seafloor Spreading
... Newer rock will have less deposits on it- more dense, more layers, older rock is at the trenches ...
... Newer rock will have less deposits on it- more dense, more layers, older rock is at the trenches ...
Seismic evidence for tearing in the subducting Indian slab beneath
... Figures 2 and 3 show the migrated images below the Andaman-Nicobar Islands down to the uppermost mantle. While generating these images, we have taken care of the artifacts arising due to the lateral heterogeneity in structure, since the S-to-p conversion points sample a wide spatial extent (see Figu ...
... Figures 2 and 3 show the migrated images below the Andaman-Nicobar Islands down to the uppermost mantle. While generating these images, we have taken care of the artifacts arising due to the lateral heterogeneity in structure, since the S-to-p conversion points sample a wide spatial extent (see Figu ...
Slide 1
... • Mostly occurs under oceans • As plates move apart magma rises up from the mantle to fill the gap • Rising magma forms shield volcanoes • Ends of plates crumple to form ridges, such as the Mid-Atlantic Ridge ...
... • Mostly occurs under oceans • As plates move apart magma rises up from the mantle to fill the gap • Rising magma forms shield volcanoes • Ends of plates crumple to form ridges, such as the Mid-Atlantic Ridge ...
spirit 2 - CEENBoT / TekBot Site
... Plate tectonics is the motion of the outer part of the earth called the lithosphere. The lithosphere is comprised of the earth’s crust and upper part of the mantel. Currently, it is thought that there are 8 major plates and many minor plates that are moving across the surface of the earth. The cause ...
... Plate tectonics is the motion of the outer part of the earth called the lithosphere. The lithosphere is comprised of the earth’s crust and upper part of the mantel. Currently, it is thought that there are 8 major plates and many minor plates that are moving across the surface of the earth. The cause ...
Seafloor Spreading Lab with Makeup
... Purpose: Show rock age and magnetism patterns in spreading sea floor with a paper model. Background: In the last few decades, scientists have discovered both age and magnetic patterns in the seafloor, which are evidence for plate tectonics. These patterns show that new seafloor has been forming for ...
... Purpose: Show rock age and magnetism patterns in spreading sea floor with a paper model. Background: In the last few decades, scientists have discovered both age and magnetic patterns in the seafloor, which are evidence for plate tectonics. These patterns show that new seafloor has been forming for ...
GEOPACK
... distances and to trace the field lines from the Earth's surface to remote regions of the magnetosphere and backwards. This requires to take into account both the contribution from the Earth's internal magnetic field sources and the external electric current systems defined by the effects of the sola ...
... distances and to trace the field lines from the Earth's surface to remote regions of the magnetosphere and backwards. This requires to take into account both the contribution from the Earth's internal magnetic field sources and the external electric current systems defined by the effects of the sola ...
PLATE MARGINS
... image courtesy USGS -- http://pubs.usgs.gov/gip/dynamic/graphics/Fig21oceanocean.gif ...
... image courtesy USGS -- http://pubs.usgs.gov/gip/dynamic/graphics/Fig21oceanocean.gif ...
Rocks
... Gneiss rocks are metamorphic. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure, and the layers are arranged in alternating patterns. Foliation ...
... Gneiss rocks are metamorphic. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure, and the layers are arranged in alternating patterns. Foliation ...
Lecture8
... D. due to tidal forces between the Earth and the Moon. E. due to plate tectonic activity. ...
... D. due to tidal forces between the Earth and the Moon. E. due to plate tectonic activity. ...
Earthquakes
... directions is called shearing. A fold in in rock that bends downward to form a valley is Tension Earth’s crust pulls rock apart, causing a syncline. normal faults. A plateau a large of flatstructure land elevated high reverse is fault has area the same as a normal above seathe level. fault, but bloc ...
... directions is called shearing. A fold in in rock that bends downward to form a valley is Tension Earth’s crust pulls rock apart, causing a syncline. normal faults. A plateau a large of flatstructure land elevated high reverse is fault has area the same as a normal above seathe level. fault, but bloc ...
KEY - Learn Earth Science
... What is a mineral? It is a _________naturally occurring_______, ______inorganic________________substance which has a __________definite chemical composition______________________________________________ What would be the opposite of this? man-made, organic, random chemical composition ...
... What is a mineral? It is a _________naturally occurring_______, ______inorganic________________substance which has a __________definite chemical composition______________________________________________ What would be the opposite of this? man-made, organic, random chemical composition ...
WEEK 10: IGNEOUS ROCKS
... than 1mm and they will have a fine texture. Or, if they cooled really fast they might not have any crystals at all NON-CRYSTALLINE. If they were cooled super fast they’ll have a GLASSY texture. Some of these rocks may have gas pockets and have a vesicular texture. Be able to read the Scheme for Ig ...
... than 1mm and they will have a fine texture. Or, if they cooled really fast they might not have any crystals at all NON-CRYSTALLINE. If they were cooled super fast they’ll have a GLASSY texture. Some of these rocks may have gas pockets and have a vesicular texture. Be able to read the Scheme for Ig ...
DCA Review Guide
... earthquakes have occurred. During the early 1900s, scientists developed seismographs that were much more sensitive and accurate than any earlier devices. A simple seismograph can consist of a heavy weight attached to a frame by a spring or wire. A pen connected to the weight rests its point on a dru ...
... earthquakes have occurred. During the early 1900s, scientists developed seismographs that were much more sensitive and accurate than any earlier devices. A simple seismograph can consist of a heavy weight attached to a frame by a spring or wire. A pen connected to the weight rests its point on a dru ...
Earthquakes
... fault slip past each other sideways, with little up or The stress force called compression squeezes rock down motion. until it folds or breaks. A fold inthat rock that bends upward into is an Stress pushes a mass of rock in an twoarch opposite anticline. directions is called shearing. A fold in in r ...
... fault slip past each other sideways, with little up or The stress force called compression squeezes rock down motion. until it folds or breaks. A fold inthat rock that bends upward into is an Stress pushes a mass of rock in an twoarch opposite anticline. directions is called shearing. A fold in in r ...
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.