Key term
... A thin dense layer (6-10km thick), which lines the ocean floors. An older, thicker layer (usually 45 – 50km thick), which makes up the Earth’s landmasses. It is less dense than oceanic crust. Volcanoes can also form in the middle of plates, where plumes of hot magma rise upward and erupt onto the se ...
... A thin dense layer (6-10km thick), which lines the ocean floors. An older, thicker layer (usually 45 – 50km thick), which makes up the Earth’s landmasses. It is less dense than oceanic crust. Volcanoes can also form in the middle of plates, where plumes of hot magma rise upward and erupt onto the se ...
Natural Disasters ppt
... Both P and S waves refract or reflect at points where layers of differing physical properties meet. They also reduce speed when moving through hotter material. These changes in direction and velocity are the means of locating discontinuities. Seismic discontinuities (a surface at which velociti ...
... Both P and S waves refract or reflect at points where layers of differing physical properties meet. They also reduce speed when moving through hotter material. These changes in direction and velocity are the means of locating discontinuities. Seismic discontinuities (a surface at which velociti ...
Plate Tectonics - Boone County Schools
... • The movement is generally so slow that you can’t see or feel it. It is measured in centimeters per year. • The exception is the San Andreas Fault, which moves in jerks and jolts. These jerks and jolts cause earthquakes. • Scientists use the Global Positioning System (GPS) to measure the movement o ...
... • The movement is generally so slow that you can’t see or feel it. It is measured in centimeters per year. • The exception is the San Andreas Fault, which moves in jerks and jolts. These jerks and jolts cause earthquakes. • Scientists use the Global Positioning System (GPS) to measure the movement o ...
Plates move apart.
... as the African Plate splits apart. This huge valley is thousands of kilometers long and as much as 1800 meters (5900 ft) deep. ...
... as the African Plate splits apart. This huge valley is thousands of kilometers long and as much as 1800 meters (5900 ft) deep. ...
Powerpoint Presentation Physical Geology, 10/e
... – Parallel mid-oceanic ridges – Field strength related to basalts magnetized with same and opposite polarities as current magnetic field – Symmetric “bar-code” anomaly pattern reflects plate motion away from ridge coupled with magnetic field reversals – Matches pattern of reversals seen in continent ...
... – Parallel mid-oceanic ridges – Field strength related to basalts magnetized with same and opposite polarities as current magnetic field – Symmetric “bar-code” anomaly pattern reflects plate motion away from ridge coupled with magnetic field reversals – Matches pattern of reversals seen in continent ...
Brain Pop-Plate Tectonics ANSWER KEY
... Africa and South America look like pieces of a puzzle that could fit together. 2. Why is it significant that they look like that? ...
... Africa and South America look like pieces of a puzzle that could fit together. 2. Why is it significant that they look like that? ...
cos.anu.edu.au • Boxing clever • When push comes to shove
... subject to slow but incredibly forceful convection currents. ...
... subject to slow but incredibly forceful convection currents. ...
Introduction to Plate Tectonics via Google Earth
... 28. Turn your attention to the Pacific plate. Note that the Pacific Ocean is comprised of several plates; we want to focus on the very large Pacific plate (not the Nazca plate, or Cocos plate, or Philippine plate or other plates.) The Pacific plate is “born” underwater at the East Pacific rise, the ...
... 28. Turn your attention to the Pacific plate. Note that the Pacific Ocean is comprised of several plates; we want to focus on the very large Pacific plate (not the Nazca plate, or Cocos plate, or Philippine plate or other plates.) The Pacific plate is “born” underwater at the East Pacific rise, the ...
Earth`s Systems and Cycles - Independent School District 196
... Key terms: Photosynthesis, combustion, respiration, deforestation, decomposition (pp. 14 -15) 6. Trace the path of nitrogen through the nitrogen cycle. Why is nitrogen an essential nutrient? Where is most nitrogen stored? Where else if nitrogen found? How do plants get their nitrogen? Animals? What ...
... Key terms: Photosynthesis, combustion, respiration, deforestation, decomposition (pp. 14 -15) 6. Trace the path of nitrogen through the nitrogen cycle. Why is nitrogen an essential nutrient? Where is most nitrogen stored? Where else if nitrogen found? How do plants get their nitrogen? Animals? What ...
Geology 12 - BC Science Teachers` Association
... Evaluate maps of depositional features (moraines, eskers, outwash plains, and glacial erratics) in an effort to establish the direction of ice transport and the maximum extent of ice in a given study ...
... Evaluate maps of depositional features (moraines, eskers, outwash plains, and glacial erratics) in an effort to establish the direction of ice transport and the maximum extent of ice in a given study ...
Convergent boundary
... What is the Theory of Plate Tectonics? • It states that pieces of Earth’s lithosphere are in a slow, constant motion, driven by convection currents in the mantle. • As the plates move, they collide, pull apart, or grind past each other, producing spectacular changes in Earth’s surface. These changes ...
... What is the Theory of Plate Tectonics? • It states that pieces of Earth’s lithosphere are in a slow, constant motion, driven by convection currents in the mantle. • As the plates move, they collide, pull apart, or grind past each other, producing spectacular changes in Earth’s surface. These changes ...
Mineral resource
... 2. Igneous • Forms below or at earth’s surface from magma • Granite • Lava rocks ...
... 2. Igneous • Forms below or at earth’s surface from magma • Granite • Lava rocks ...
Notes on Igneous Rocks:
... _______________-moving, THINNER= LOW Viscosity, less resistance to flowing, more fluid Crystallize to _____________ __________________ minerals Resulting rocks have relatively _____________ __________________. Mafic igneous rocks make up the _________________ ____________________. Examples ...
... _______________-moving, THINNER= LOW Viscosity, less resistance to flowing, more fluid Crystallize to _____________ __________________ minerals Resulting rocks have relatively _____________ __________________. Mafic igneous rocks make up the _________________ ____________________. Examples ...
The solar wind
... On typical field lines, attached to the Earth at both ends, such motion would soon lead the particles into the atmosphere, where they would collide and lose their energy. However, an additional feature of trapped motion usually prevents this from happening: the sliding motion slows down as the parti ...
... On typical field lines, attached to the Earth at both ends, such motion would soon lead the particles into the atmosphere, where they would collide and lose their energy. However, an additional feature of trapped motion usually prevents this from happening: the sliding motion slows down as the parti ...
Acoustic Relating to sound waves (synonymous with Sonic
... series of anomalies in a plume over the field attributed to gas leakage. Increase in volume Natural gas, methane and ethane, without any significant content of heavier hydrocarbon fractions. A well in which no hydrocarbon is found. That part of the process of denudation which involves the wearing aw ...
... series of anomalies in a plume over the field attributed to gas leakage. Increase in volume Natural gas, methane and ethane, without any significant content of heavier hydrocarbon fractions. A well in which no hydrocarbon is found. That part of the process of denudation which involves the wearing aw ...
Document
... Lower mantle: 49.2% of Earth's mass; depth of 650-2’890 kilometers The lower mantle contains 72.9% of the mantle-crust mass and is probably composed mainly of silicon, magnesium, and oxygen. It probably also contains some iron, calcium, and aluminum. Scientists make these deductions by assuming the ...
... Lower mantle: 49.2% of Earth's mass; depth of 650-2’890 kilometers The lower mantle contains 72.9% of the mantle-crust mass and is probably composed mainly of silicon, magnesium, and oxygen. It probably also contains some iron, calcium, and aluminum. Scientists make these deductions by assuming the ...
Metamorphic Rock by Leila, John*S, and Samantha
... in the earth or on the earth. Metamorphic rock usually appear in big clusters of rock. They can also be different in size shape and color. ...
... in the earth or on the earth. Metamorphic rock usually appear in big clusters of rock. They can also be different in size shape and color. ...
Deep Origin of Hotspots— the Mantle Plume Model
... constraint on the heat flux from the core (14) and hence insight into the energy budget for the core dynamo that generates Earth’s magnetic field (15). Many natural phenomena were deduced correctly from indirect effects before instruments were developed with sufficient sensitivity to verify their ex ...
... constraint on the heat flux from the core (14) and hence insight into the energy budget for the core dynamo that generates Earth’s magnetic field (15). Many natural phenomena were deduced correctly from indirect effects before instruments were developed with sufficient sensitivity to verify their ex ...
12.002 Physics and Chemistry of the Earth and Terrestrial Planets
... In general, convective heat loss in large bodies is much more efficient than conductive heat loss, especially over distances of more than 100 km. This is small compared to the radius of most terrestrial bodies, so it is difficult for the planets to cool much by conduction. But, in order for convecti ...
... In general, convective heat loss in large bodies is much more efficient than conductive heat loss, especially over distances of more than 100 km. This is small compared to the radius of most terrestrial bodies, so it is difficult for the planets to cool much by conduction. But, in order for convecti ...
EARTHQUAKES AND PLATE TECTONICS
... Rocks along faults pressed tightly together. Stress occurs but friction prevents them from moving – fault is said to be locked. Rocks under stress suddenly shift along a fault Fault – break in body of rock where one block slides relative to another When rocks along a fault move, a sudden rel ...
... Rocks along faults pressed tightly together. Stress occurs but friction prevents them from moving – fault is said to be locked. Rocks under stress suddenly shift along a fault Fault – break in body of rock where one block slides relative to another When rocks along a fault move, a sudden rel ...
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.