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presentation source
presentation source

... – Velocity of seismic waves increases with increasing density of the rock. Hence, seismic wave velocities show general increase with depth into the Earth. – When seismic wave crosses a boundary between rock layers of different density it may be: • Reflected off of the boundary and back toward the su ...
P-waves
P-waves

... P-waves and S-waves – Body waves  Primary waves travel the fastest in the crust and usually are the first waves to arrive  Secondary (or Shear) waves are slower and therefore take longer to arrive ...
- Toolbox Pro
- Toolbox Pro

... broken up into sections (lithospheric plates or tectonic plates) and their movement and interactions produce major changes in Earth’s surface ► At the plate boundaries you’ll find: Earthquakes, volcanoes, trenches, mountains and mid-ocean ridges-Zones of frequent crustal activity!!! Ex: Pacific Ring ...
Geology (Chernicoff) - GEO
Geology (Chernicoff) - GEO

... A) the change within an ocean wave from oscillatory motion to translatory motion. B) the bending of waves until they break, or fracture, to become breakers within the surf zone. C) the bending of waves by constructive or destructive interference, as the waves encounter other waves. D) the bending of ...
Earthquakes, Volcanoes, and Mountain building
Earthquakes, Volcanoes, and Mountain building

... • The Himalayan Mountains formed when the Indian Plate crashed into the Eurasian Plate. Today the two plates are still colliding and the Himalayas continue to rise. If the first person climbed Everest in 1953 and the mountains grow about .5 inches per year. How many more inches would you have to cli ...
Chapter 7_Part 1
Chapter 7_Part 1

... moving as a consequence of plate tectonics We learned about this using evidence from Earth’s magnetic field. Back to that later. First, let’s consider what we can learn from other phenomenon, e.g., earthquakes ...
Section 19.1 Forces Within Earth
Section 19.1 Forces Within Earth

... Results of Stress and Strain • Rocks fracture when stress and strain reach a critical point. • At these breaks rocks can move releasing the energy built up as a result of stress. • Earthquakes are the result of this movement and release of energy. ...
Surface Waves
Surface Waves

... The second type of body wave is the S wave or secondary wave, which is the second wave you feel in an earthquake. An S wave is slower than a P wave and can only move through solid rock. (3.6 km/sec in the crust) This wave moves rock up p and down,, or side-to-side. • They are also called transve ...
File
File

... Body waves travel through the interior of the earth. The two types of body waves are P-waves and S-waves Surface waves – these travel through the rock that we are standing on – the crust ...
Earth as a planet
Earth as a planet

... 1956: Patterson – 4.6 billion years from radiogenic lead isotopes. This agrees with astronomical estimates for the age of the Sun (estimate independently from the H-R diagram) and with meteorites. Note that most surface rocks are much younger, with ages less than 600 million years. ...
to Unit 5 Topic 5-6
to Unit 5 Topic 5-6

... • Primary or p waves are the fastest and can push through solids, liquids and gases • Secondary or s waves travel more slowly and can only pass through solids • Surface waves are the slowest of all, but their rolling motion can be very destructive (like a ripple effect on water) • Primary waves are ...
Document
Document

... Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. ...
01 - Mayfield City Schools
01 - Mayfield City Schools

... Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. ...
Chapter 8 Section 1 Guided Reading
Chapter 8 Section 1 Guided Reading

... Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. ...
Directed Reading A
Directed Reading A

... Directed Reading A continued ...
Chapter12 EarthsInterior
Chapter12 EarthsInterior

... gravity readings. –Positive anomaly: gravity reading higher than the regional gravity readings –Negative anomaly: gravity readings lower than the regional gravity readings ...
9 - Cengage
9 - Cengage

... conditions influence the physical properties of the materials subjected to them. The behavior of a rock is determined by three factors: temperature, pressure, and the rate at which a deforming force (stress) is applied. This behavior, in turn, determines how (and if) rocks will move. We can classify ...
Waves - Revision World
Waves - Revision World

... The paths of these waves are curved because density is gradually changing Observations: 1) It has a thin crust, 2) it has a semi-fluid mantle where density increases with depth, 3) a core with a liquid outer part and a solid inner part ...
IASbaba`s Prelims 60 Day Plan – Day 52 (Geography) 2017
IASbaba`s Prelims 60 Day Plan – Day 52 (Geography) 2017

... Where the crust is neither produced nor destroyed as the plates slide horizontally past each other. Transform faults are the planes of separation generally perpendicular to the midoceanic ridges. As the eruptions do not take all along the entire crest at the same time, there is a differential moveme ...
Magnetic polarity reversals and Plate Tectonics Earth`s Magnetic Field
Magnetic polarity reversals and Plate Tectonics Earth`s Magnetic Field

... Magnetic minerals always point toward the magnetic north pole, where ever it is S ...
Historical Geology, Plate Tectonics, and
Historical Geology, Plate Tectonics, and

... Polar wander assuming no continental drift Europe N.Am ...
Earth`s Waters Section 1–1 Review and Reinforce (p. 17) 1
Earth`s Waters Section 1–1 Review and Reinforce (p. 17) 1

... Section 2-2 Review and Reinforce (p. 53) 1. Seismic waves are vibrations that travel through Earth carrying the energy released during an earthquake. 2. P waves travel fastest, so they would arrive first, followed by S waves, then surface waves. 3. Surface waves 4. The moment magnitude scale provid ...
Earth as a planet
Earth as a planet

... 1956: Patterson – 4.6 billion years from radiogenic lead isotopes. This agrees with astronomical estimates for the age of the Sun (estimate independently from the H-R diagram) and with meteorites. Note that most surface rocks are much younger, with ages less than 600 million years. ...
the Earth - Physical Science 100
the Earth - Physical Science 100

... • Molten iron/nickel has electric current. Conclude, at least some portion of the earth’s core is molten iron and nickel. ...
Ch. 11 Earthquakes
Ch. 11 Earthquakes

... Richter scale – measures the ground motion from an earthquake to find its strength. Moment magnitude is a measurement of a quakes strength based on size of area the fault moves, the average distance that the fault blocks move, and the rigidity of the rocks in the fault zone. Mercalli scale – express ...
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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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