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How are seismic waves generated-Elastic rebound theory Describe
How are seismic waves generated-Elastic rebound theory Describe

... What can seismic waves tell us? Studies of the different types of seismic waves can tell us much about the nature of the Earth’s structure. For example, seismologists can use the direction and the difference in the arrival times between P-waves and S-waves to determine the distance to the source o ...
Mechanisms of Plate Motion
Mechanisms of Plate Motion

... the plate boundary cools and spreads out, the mineral crystals align themselves with the magnetic field as it then exists. • The alternating stripes indicate field flip-flops over geological time. ...
19.1 Forces Within Earth
19.1 Forces Within Earth

... (1.7 X faster than S waves) 3. Secondary waves (S-waves, transverse): rocks move at right angle in relation to wave direction ...
Unit 3earthmoon part 1
Unit 3earthmoon part 1

... a belt of high-energy particles around Earth: Van Allen belts ...
Earthquakes - Epiphany Catholic School
Earthquakes - Epiphany Catholic School

... through earth’s interior • P waves – a.k.a. pressure waves • Travel fastest – also called primary waves since they are the first to be detected • Through solid, liquid & gasses • Cause rock to move back & forth in direction wave is traveling ...
earthquakes - Cloudfront.net
earthquakes - Cloudfront.net

... How do we know there are different layers of the Earth? • Because of seismic waves from earthquakes • Seismic waves travel through solids faster than liquids • Seismic waves change direction when they change the material they are going through (from a solid to a liquid) ...
The Earth`s Interior
The Earth`s Interior

... • S-wave shadow zone: the region on the earth’s surface (at any distance more than 103o from an earthquake epicenter) in which S waves from the earthquake are absent • The S-wave shadow zone seems to indicate that S waves do not travel through the core at all, if this is true, it implies that the co ...
Tsunamis - GEOCITIES.ws
Tsunamis - GEOCITIES.ws

... most destructive force. They are giant waves that are caused by sudden movement of the seabed during an earthquake or volcano. ...
Chapter 8 Notes What are Earthquakes? The study of earthquakes
Chapter 8 Notes What are Earthquakes? The study of earthquakes

... i. As tectonic plates move past one another, stress increases as they scrape past one another. ii. As rocks try to move past one another, it causes rocks to deform. iii. Deformation is the bending, tilting and breaking of rocks in Earth’s crust. iv. Two types of deformation 1. Plastic deformation- d ...
259_1.pdf
259_1.pdf

... cyclotron resonance, and Coulomb collisions with other species. In particular, the ambipolar electric field also reflects the influence due to ion cyclotron resonance, and Coulomb collisions, and, in the case where KSEE is included, the VFE as well. The profiles of for the protons and alpha particle ...
Plate Motion and Convection Currents
Plate Motion and Convection Currents

... heat from the molten asthenosphere does not move evenly in convection currents but comes to the surface as gushes of hot material that melts through the middle of plates, rather than escaping out from the edges. These are called mantle plumes. The plume melts the plate like a blowtorch, and a volcan ...
Driving Forces- Plate Movement Transcript
Driving Forces- Plate Movement Transcript

... ..Convection is heat transfer by the movement of heated liquid. This method is the heat transfer method this lesson will focus on. Slide 5: Plate Movement ..Scientists still do not entirely understand the process of how tectonic plates move. ..However, most scientists agree that convection currents ...
Geology and Layers of the Earth notes
Geology and Layers of the Earth notes

... C. outer core is beneath the mantle I. It is a slow flowing liquid of iron and nickel II. Density, temperature and pressure increase ...
Chapter 19 - Earthquakes
Chapter 19 - Earthquakes

... Faults ...
Record: 1 - GeorgiaStandards.Org
Record: 1 - GeorgiaStandards.Org

... northern lights is atomic particles hitting our atmosphere as they shoot down from space. • “You can see the lights only in winter.” Because the northern lights are associated with Arctic locations, people assume the lights can only appear when it is cold. Actually, the best displays often come in S ...
Plate Tectonics Unit Test
Plate Tectonics Unit Test

... 12. Hurricanes produce giant sea waves called tsunamis. False; Earthquakes 13. Continental crust is made of rock that is more dense than oceanic crust. False; less dense 14. Volcanoes are common in the Ring of Fire. True 15. The epicenter is the point on the Earth’s surface where an earthquake begin ...
planetesimals - Mestre a casa
planetesimals - Mestre a casa

... and elongated in the opposite direction. It extends to about 60,000 km from Earth in the Sun direction and much farther in the opposite direction. The magnetosphere acts as a shield that deflects most of the solar wind (ions and free electrons emitted by the Sun). If it didn’t exist, atmospheric gas ...
Earth`s Seismicity
Earth`s Seismicity

... • compressional wave – push/pull ...
Van Allen radiation belt
Van Allen radiation belt

... spring to stretch further. A machine called a gravimeter can be built based on this principle to measure Earth's gravity or differences in Earth's gravity between one place and another. Earth’s rotation causes the polar regions to flatten down slightly, making Earth an ellipsoid instead of a sphere. ...
What are Earthquakes
What are Earthquakes

... Compress and expand like an accordion Move through solids, liquids, and gases ...
Key Questions for Understanding Section 16.1
Key Questions for Understanding Section 16.1

... landforms considered temporary? ...
Topic VI: The Dynamic Earth
Topic VI: The Dynamic Earth

... What happens the deeper you go in the Earth? ...
ch 3 PowerPoint
ch 3 PowerPoint

... from the effects of earthquakes?  Why are earthquakes sometimes in places that are not near a plate ...
Earthquakes
Earthquakes

... Layers of the Earth • Lithosphere – outermost layer, contains both types of crust (Continental and Oceanic) ; 100 km thick • All earthquakes occur in the area. • Asthenosphere - Not solid, capable of flow or movement. • Area nearest to lithosphere is molten; this allows the plates to move. • 600 km ...
Earthquake – violent shaking of the ground
Earthquake – violent shaking of the ground

... continental crust – granitic, less dense, thicker oceanic crust – basaltic, more dense, thinner Moho – interface between more dense and less dense mantle and crust mantle – layer below crust that plates move across, where convection occurs meteorite – same composition as the inner core 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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