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Natrial daisasters
Natrial daisasters

... Earthquake facts Earthquakes are also called temblors can be so tremendously destructive it's hard to imagine they occur by the thousands every day around the world usually in the form of smell tremors. On average there are 18 major earthquake and one great earthquake each year. ...
Earth`s Magnetic Field
Earth`s Magnetic Field

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here
here

... • The number of great earthquakes known in the past several centuries appears inadequate to accommodate the 16-18 mm/year of Himalayan convergence observed. • We conclude that several M>8 earthquakes may be overdue. Due to increased populations and urbanization in the Ganges plain, the death toll fr ...
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... Activity 2 - What happens when an earthquake occurs? • Watch the Boardworks animation (next 5 slides). Look carefully at what happens in an earthquake • Take notes using the key words • Now describe in a paragraph what happens when an earthquake occurs… EXTENSION - Make sure you use the following w ...
Earthquakes PPT - Van Buren Public Schools
Earthquakes PPT - Van Buren Public Schools

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Earthquakes PPT - Van Buren Public Schools
Earthquakes PPT - Van Buren Public Schools

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Energy and Waves Review Sheet/Study Guide
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S05_4359_Exam01

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Chapter 6- Earthquakes Test Review Sheet
Chapter 6- Earthquakes Test Review Sheet

... APRIL 20th. Please contact me to set up a day and time to do your make up saunded@umich.edu  You are permitted to make one (1) 3” x 5” handwritten note card to use during the test. Fill both sides!! You can use it on the original exam OR the make up.  Email me if you have any questions—I really do ...
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Earthquakes: The Big One - Canadian Geographic Education
Earthquakes: The Big One - Canadian Geographic Education

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Easton
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... J. Int. 174, 889–903; 2008) These researchers had privately alerted the Haitian government, but advised that they could not predict the timing of the recurrence. Sixty of the world’s largest cities lie on plate boundaries and are at risk from interplate earthquakes. Yeats duly discusses the usual su ...
Lecture #1
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... The point on the Earth’s surface directly above the earthquake’s focus. ...
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Chapter 11: Earthquakes - Ms. Banjavcic`s Science
Chapter 11: Earthquakes - Ms. Banjavcic`s Science

...  Rock above the fault surface moves downward in relation to rock below the fault surface.  Caused by tension forces  Divergent boundary Reverse Faults  Rock above the fault surface is forced up and over the rock below.  Caused by compression  Convergent boundary Strike-Slip Faults  Rocks on e ...
Earthquakes By Steven and Amanda
Earthquakes By Steven and Amanda

... WHAT CAUSES EARTHQUAKES? As tectonic plates move against each other, stress builds up along the faults. Rocks may change, which is a process called deformation (the change in the shape of rock in response to stress). In some circumstances, elastic rebound (the sudden return of elastically formed ro ...
Earth`s Processes Test Review
Earth`s Processes Test Review

... 4. Sketch how the following plates move. Use arrows to show direction of movement. a. Convergent b. Divergent c. Sliding (Transform) 5. Circle the correct unit (label). Tectonic plates move around 1-10 meters/centimeters/miles per year. 6. Fill in the blank with the words epicenter and focus. The __ ...
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Earthquake



An earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, which can be violent enough to destroy major buildings and kill thousands of people. The severity of the shaking can range from barely felt to violent enough to toss people around. Earthquakes have destroyed whole cities. They result from the sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.Earthquakes are measured using observations from seismometers. The moment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter magnitude scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of March 2014), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modified Mercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.
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