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Interior of the earth
Interior of the earth

... Isostasy (Greek ísos "equal", stásis "standstill") is a term used in geology to refer to the state of gravitational equilibrium between the earth's lithosphere and asthenosphere such that the tectonic plates "float" at an elevation which depends on their thickness and density. This concept is invok ...
Marks`s powerpoint presentation (as a pdf), 0
Marks`s powerpoint presentation (as a pdf), 0

... hot, it radiates a natural heat to the upper layers. • Because of this a current of heat comes into being. Those are also known as the convection currents. • The convection currents cause the movement of the tectonic plates. ...
What "Seis" Shake?
What "Seis" Shake?

... Seismologists are responsible for monitoring earthquakes and other seismic activity. In case you are curious, seismo is the Greek word for earthquakes. Now keep in mind, seismologists may not be near the actual plates when they monitor seismic activity. However, they have the tools to help them loca ...
The Dynamic Crust
The Dynamic Crust

... P-waves cause particles in the rock to vibrate in a back and forth motion in the same direction the wave is traveling. ...
Chapter 32
Chapter 32

... • A fracture along which visible movement can be detected on one side relative to the other. ...
Document
Document

... Ground fissures caused by liquefaction near the mouth of the Pajaro River in California during the 1989 Loma Prieta earthquake. When the surface of the ground oscillates, wet, sandy, and muddy soils can flow like a liquid. This is liquefaction. You can liquefy wet sand at the beach by pumping it up ...
Document
Document

... Ground fissures caused by liquefaction near the mouth of the Pajaro River in California during the 1989 Loma Prieta earthquake. When the surface of the ground oscillates, wet, sandy, and muddy soils can flow like a liquid. This is liquefaction. You can liquefy wet sand at the beach by pumping it up ...
Silicon Solar PV at an Atomic Level
Silicon Solar PV at an Atomic Level

... which has just three outer electrons which means our Boron based Silicon crystal has an electron vacancy, a hole for another electron to potentially fill. It is consequently positively charged and is called ‘P’ Type Layer Silicon (P=Positive). Bringing these two Layers into direct contact with each ...
Seismic Waves and Earth`s Interior PPT Name
Seismic Waves and Earth`s Interior PPT Name

... areas of rock. When the stress builds to a level that is too high, the rock gives way, snaps, and breaks. That break is the origin or focus of the earthquake. Of the choices, volcanic activity was a good cause of earthquakes. Tides and construction may be big factors to you, but the surface of the E ...
Chapter 5: Plate Tectonics
Chapter 5: Plate Tectonics

...  What are the characteristics of Earth's crust, mantle, and core? ...
Seismic Wave
Seismic Wave

... different kinds of seismic waves. They move in (secondary wave) is slower than a P wave and can different ways. The two main types of waves are only move through solid rock, not through any body waves and surface waves. Body waves can liquid medium. It is this property of S waves that travel through ...
Slide 1
Slide 1

... being suspended by the molten outer core. The inner core is predominantly iron metal with significant amounts of the element nickel. This inner layer in mutual combination with the rotational motion of the Earth creates a dynamo effect where a force field is generated. This field is also known as Ea ...
Features of Earthquakes (45)
Features of Earthquakes (45)

... which travel slower, arrive second. Surface waves ...
Tsunami - BrainPOP
Tsunami - BrainPOP

... c. They can travel long distances and carry lots of energy d. They travel along at exactly the speed of sound 8. Where would you find a subduction zone? a. At the boundary between Asia and Europe b. In the middle of the ocean, far away from the continents c. Off the coast of a continent d. Near the ...
Tsunami - BrainPOP
Tsunami - BrainPOP

... c. They can travel long distances and carry lots of energy d. They travel along at exactly the speed of sound 8. Where would you find a subduction zone? a. At the boundary between Asia and Europe b. In the middle of the ocean, far away from the continents c. Off the coast of a continent d. Near the ...
- Google Sites
- Google Sites

... Normal Fault: Tetons in Wyoming ...
Convection Currents Activity - Mamanakis
Convection Currents Activity - Mamanakis

... 3. How do the plates sitting on top of the Mantle move where convection currents are sinking? (See diagram below.) How do plates sitting on top of the Mantle move where convection currents are rising? (See diagram below.) 4. Study this diagram. a. What has to happen for convection currents to stop r ...
The Core - davis.k12.ut.us
The Core - davis.k12.ut.us

... C. When the Space Shuttle re-enters the atmosphere, it has about 20-25 minutes before it lands, not 3. It *is* a glider, though, and cannot simply fly elsewhere to land. D. The Space Shuttle cannot maneuver that quickly. Also, no sonic boom would be heard while the shuttle is flying at a low altitud ...
Principles of Geology
Principles of Geology

... descriptions as for shallow-focus events. Waves leaving the focus in an upward direction, and reflected at the surface are described by the letters p, s, as follows: ...
Internal Structure of the Earth and Pangean
Internal Structure of the Earth and Pangean

... landscapes, density, earthquake, seismic waves, lithosphere, asthenosphere, elements, convection, theory, glacier, supercontinent, technology, shadow zone, long axis, scale, model, eruption, schematic diagram, hypothesis, scientific community. ...
Seismic waves - opotikicollegeearthscience
Seismic waves - opotikicollegeearthscience

... • Surface waves are similar in nature to water waves and travel just under the Earth’s surface. They are typically generated when the source of the earthquake is close to the Earth’s surface. Although surface waves travel more slowly than S-waves, they can be much larger in amplitude and can be the ...
New results on the age- activity relation from Kepler Alfio Bonanno
New results on the age- activity relation from Kepler Alfio Bonanno

... Total oscillation power (in quiet Sun units) ...
Development of electric currents in a magnetic field configuration
Development of electric currents in a magnetic field configuration

... field. The currents should satisfy ∇ · J = 0, hence, perpendicular currents might connect to return currents to close the current system. The currents propagate along the field lines at the local Alfvén speed, following the perturbations of the magnetic field. It is known that fast-mode waves can al ...
Convection currents
Convection currents

... together make up a zone of rigid, brittle rock called the Lithosphere. ...
Chapter 6 – Plate Tectonics and Earthquakes
Chapter 6 – Plate Tectonics and Earthquakes

... 2. Material closer to the core is warm and rises, mantle material closer to the lithosphere is cooler and sinks 3. The rising and sinking cycle of the mantle material creates a circular motion that carries the plates of the Earth ...
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Ionospheric dynamo region

In the height region between about 85 and 200 km altitude on Earth, the ionospheric plasma is electrically conducting. Atmospheric tidal winds due to differential solar heating or due to gravitational lunar forcing move the ionospheric plasma against the geomagnetic field lines thus generating electric fields and currents just like a dynamo coil moving against magnetic field lines. That region is therefore called ionospheric dynamo region. The magnetic manifestation of these electric currents on the ground can be observed during magnetospheric quiet conditions. They are called Sq-variations (S=solar; q=quiet) and L-variations (L=lunar) of the geomagnetic field.Additional electric currents are generated by the varying magnetospheric electric convection field. These are the DP1-currents (the auroral electrojets) and the polar DP2-currents. Finally, a polar-ring current has been derived from the observations which depends on the polarity of the interplanetary magnetic field. These geomagnetic variations belong to the so-called external part of the geomagnetic field. Their amplitudes reach at most about 1% of the main internal geomagnetic field Bo.
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