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Inside the Earth
Inside the Earth

... ● Paths of seismic waves ● wave bending (refraction) ● shadow zones (P and S) ● reflection at internal ...
Notes on Earthquakes
Notes on Earthquakes

... needed to locate the epicenter  P-waves travel the fastest ...
The Aurora
The Aurora

... Explorer, Viking, Polar e Image) made it possible to obtain the global auroral distribution ...
Figure 1 - Research
Figure 1 - Research

... • There is a cyclic variation: n is highest soon after sunspot maxima and smallest during sunspot minima. This is partly due to the solar cycle variation of the heliospheric magnetic field, partly due to the varying proximity to the heliospheric currecnt sheet. During sunspot minimum the HCS is flat ...
Seismic Waves
Seismic Waves

... INSIDE EARTH By Brooke E. ...
10.1 Continental Drift
10.1 Continental Drift

... · undersea mountain ranges with a crack, or rift, in the center through which magma rises · sediment closer to the ridge is younger than sediment farther from the ridge · oldest oceanic rock = about 175 million years old ...
PowerPoint Presentation - Drifting Continents
PowerPoint Presentation - Drifting Continents

... • Sir Francis Bacon 1620: – “It appears that South America and Africa fit together” • Antonio Snyder published a sketch in 1655 showing S.A. and Africa together • Benjamin Franklin in 1782 said – “The crust of the Earth must be a shell floating on a fluid interior. Thus, the surface of the globe wou ...
Lightning
Lightning

... Fronts exist, may strengthen, and may evolve ...
Lithosphere Calculated magnetic field from the model of sea
Lithosphere Calculated magnetic field from the model of sea

... of charged particles from the sun and acts a kind of shield. Some researchers believe that evolution of life is accelerated during periods of weak magnetic ...
Why is the Earth Moving?
Why is the Earth Moving?

... E. As the magma warms it expands and becomes less dense. F. It are these currents that create friction with the crust above and causes it to move. G. Magma (semi-molten rock) near the outer core is heated. H. As the magma nears the crust it begins to cool. ...
earthquakes - Archway Chandler
earthquakes - Archway Chandler

... 1. these waves move land side to side and are slower than P Waves (S = side to side) 2. only travel through solids, cannot travel through liquids iii. Land Waves (L Waves) – also called surface waves 1. these waves form when P and S Waves combine 2. they move land up and down (like ripples in a pond ...
Lesson Assessment: Plate Tectonics
Lesson Assessment: Plate Tectonics

... 6. Kauai, the farthest northwest of the Hawaiian islands, is the oldest, and each island is younger as one moves to the southeast. How do geologists explain the formation of this volcanic island chain? a) The Hawaiian chain is the visible portion of a long mid  ocean ridge that is producing new oce ...
Test 3 Review
Test 3 Review

... Tides: _________________ Tides: During ___________________ moon phases the moon, sun, and Earth are aligned causing a greater gravitational pull on the Earth. _________________ Tides: During quarter moon phases the moon, sun, and Earth are at right angles canceling the effect of the gravitational pu ...
Sequence of events in an Earthquake
Sequence of events in an Earthquake

... instruments they do very little. S waves (secondary) can be very destructive. An S wave only travels through solid material. These waves cause the ground to shake violently both vertically and horizontally. L waves (long waves) are slower than p waves and s waves, but they can also be ...
StudyGuide-for-Oceans-2015-key
StudyGuide-for-Oceans-2015-key

... 26. The daily rise and fall of water on Earth’s coastlines are called __Tides___________ 27. The __Gravity___ of the Moon__ and the _Sun__ causes tides on Earth. 28. A tide with the LEAST difference between high and low tides is known as a Neap tide. 29. . A tide with the GREATEST difference between ...
Ch. 1 Layers of the Earth
Ch. 1 Layers of the Earth

... the crust is made up of a thin, solid layer covering the entire earth’s surface. The crust’s thickness ranges from 5 to 20 miles, it only makes up 1% of the earth's volume. ...
lecture * 2011 japanese tsunami and wave properties
lecture * 2011 japanese tsunami and wave properties

... by focusing due to refraction. The tsunami caused one death in northern California when a man standing on a pier photographing the event was swept away and drowned. ...
Plate Motion
Plate Motion

... be playing a role here as well. ...
divergent boundary - Brighten Academy​Middle School
divergent boundary - Brighten Academy​Middle School

... new rock and new land, sometimes in mountain ranges. ...
Part A: Modeling Shadow Zones The structure of the Earth consists
Part A: Modeling Shadow Zones The structure of the Earth consists

... primarily of iron. At a hellish 5,700°C, this iron is as hot as the Sun’s surface, but the crushing pressure caused by gravity prevents it from becoming liquid. Surrounding this is the outer core, a 2,000 km thick layer of iron, nickel, and small quantities of other metals. Lower pressure than the i ...
On the origin of the fast solar wind in polar coronal funnels
On the origin of the fast solar wind in polar coronal funnels

... observational constraints. 2. Magnetic field configuration The magnetic field consists of two parts, the lower “funnel” region and the upper “coronal” region. In the lower region (z < 15 Mm, z is the height above the photosphere) the global polar magnetic field is nearly constant and homogeneous at ...
Study outline for Oceanography
Study outline for Oceanography

... Chapter 8 Waves and water dynamics Chapter at a glance: Most waves produced by storms Most move in circular motion In shallow water the physical characteristics of waves change. Tsunamis are high energy waves that can be very destructive. ...
Continental Drift PP
Continental Drift PP

... other forming a trench • Tension builds up in the plate laying on top while heat may generate magma below (Mts & ...
gooddiagrams
gooddiagrams

... Geologists have known for about 100 years that the Earth is composed of four layers; the Crust, Mantle, Outer Core, and the Inner Core . Scientists still argue about the makeup of these layers and exactly how each layer interact. A geologist, by the name of Andrija Mohorovicic, discovered in 1909 th ...
S waves
S waves

... 1. Fault- a fracture in the Earth where movement has occurred 2. Epicenter- the place on the surface directly above the focus 3. Focus – the source of an earthquake under the earth 4. Elastic Rebound – causes earthquakes, stress relieved and earth bounces back where there is not any stress. 5. After ...
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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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