Ch 18 PP
... forces overcome the friction between plates. Earthquakes are categorized based on how far beneath the surface the focus is located. • The sudden movement of the lithosphere during an earthquake sends seismic waves (vibrations) through Earth. • Primary and secondary body waves travel through Earth, s ...
... forces overcome the friction between plates. Earthquakes are categorized based on how far beneath the surface the focus is located. • The sudden movement of the lithosphere during an earthquake sends seismic waves (vibrations) through Earth. • Primary and secondary body waves travel through Earth, s ...
Magnitude 7.7 AWARAN, PAKISTAN Tuesday, 24 September, 2013
... probable and the disaster is likely widespread. Past events with this alert level have required a national or international level response. Orange alert level for economic losses. Significant damage is likely. Estimated economic losses are less than 1% of GDP of Pakistan. ...
... probable and the disaster is likely widespread. Past events with this alert level have required a national or international level response. Orange alert level for economic losses. Significant damage is likely. Estimated economic losses are less than 1% of GDP of Pakistan. ...
Plate tectonics, tsunamis, volcanoes, and seasons
... got older This suggested that new crust was being created at volcanic rift zones ...
... got older This suggested that new crust was being created at volcanic rift zones ...
Answers to Earthquake Lab - Westerville City Schools
... Earthquakes occur because of a sudden release of stored energy. This energy has built up over long periods of time as a result of tectonic forces within the earth. Most earthquakes take place along faults in the upper 25 miles of the earth's surface when one side rapidly moves relative to the other ...
... Earthquakes occur because of a sudden release of stored energy. This energy has built up over long periods of time as a result of tectonic forces within the earth. Most earthquakes take place along faults in the upper 25 miles of the earth's surface when one side rapidly moves relative to the other ...
Dynamic Earth
... • Given distance from epicenter, you can find how long it takes a P or S wave to travel to that seismic station • Or you can find the distance the wave traveled based on how long it took the wave to travel there Approximately how long does an earthquake P-wave take to travel the first 6500 kilometer ...
... • Given distance from epicenter, you can find how long it takes a P or S wave to travel to that seismic station • Or you can find the distance the wave traveled based on how long it took the wave to travel there Approximately how long does an earthquake P-wave take to travel the first 6500 kilometer ...
Thursday 052611
... the Caribbean Plate show that it moves eastward at a rate of about 20 mm/yr (2 cm/year) with respect to the North American Plate. This is a fairly slow rate of transform motion between the Caribbean and North American plates. For comparison, the rate of transform motion across the San Andreas transf ...
... the Caribbean Plate show that it moves eastward at a rate of about 20 mm/yr (2 cm/year) with respect to the North American Plate. This is a fairly slow rate of transform motion between the Caribbean and North American plates. For comparison, the rate of transform motion across the San Andreas transf ...
earthquakes-2nd-of-week-52
... the surface they can become surface waves. – So what makes them different? – these type of waves move more slowly than the other two but they can cause Sevier ground movements causing the ground to roll like ocean waves and to move from side to side. ...
... the surface they can become surface waves. – So what makes them different? – these type of waves move more slowly than the other two but they can cause Sevier ground movements causing the ground to roll like ocean waves and to move from side to side. ...
Guided Notes for Forces Within Earth
... deformation. This type of strain produces permanent deformation, which means that the material is deformed even if the stress is reduced to zero. ...
... deformation. This type of strain produces permanent deformation, which means that the material is deformed even if the stress is reduced to zero. ...
Earthquakes
... the water and causes huge waves to form. Waves don’t gain height until they near the ...
... the water and causes huge waves to form. Waves don’t gain height until they near the ...
Study Guide - Thomas C. Cario Middle School
... 1.) What is the name of the surface along which rocks break when too much force is applied? Fault 2.) What is the name for the vibrations produced by the breaking of rock? Earthquake – seismic waves 3.) In which kind of fault does the rock above the fault (the hanging wall) move ...
... 1.) What is the name of the surface along which rocks break when too much force is applied? Fault 2.) What is the name for the vibrations produced by the breaking of rock? Earthquake – seismic waves 3.) In which kind of fault does the rock above the fault (the hanging wall) move ...
Restless Earth - Acland Burghley School
... Interpret a cross-section of the Earth, with details (temperature, density, composition, physical state) of layered structure (including the asthenosphere); using rock samples to contrast continental and oceanic crust. Examine the core’s internal heat source (through radioactive decay) and how this ...
... Interpret a cross-section of the Earth, with details (temperature, density, composition, physical state) of layered structure (including the asthenosphere); using rock samples to contrast continental and oceanic crust. Examine the core’s internal heat source (through radioactive decay) and how this ...
Topic 12 guided reading answer key
... 33. Approximately how much do the lithospheric plates move each year? A FEW CENTIMETERS A YEAR p.230 34. Study figure 12-3. What do these diagrams show us about the positions of the continents? THE CONTINENTS HAVE CHANGED POSITIONS THROUGHOUT HISTORY p.231 35. Define Divergent Plate Boundary: WHEN P ...
... 33. Approximately how much do the lithospheric plates move each year? A FEW CENTIMETERS A YEAR p.230 34. Study figure 12-3. What do these diagrams show us about the positions of the continents? THE CONTINENTS HAVE CHANGED POSITIONS THROUGHOUT HISTORY p.231 35. Define Divergent Plate Boundary: WHEN P ...
Into Earth
... • Global positioning satellite receivers, strainmeters and new satellite radar imagery will measure and map the smallest movements across faults, the magma movement inside active volcanoes and the very wide areas of deformation associated with plate tectonic motion. • An observatory deep within the ...
... • Global positioning satellite receivers, strainmeters and new satellite radar imagery will measure and map the smallest movements across faults, the magma movement inside active volcanoes and the very wide areas of deformation associated with plate tectonic motion. • An observatory deep within the ...
Physical and Ecological Processes
... happens most often when oceanic plates collide with continental plates. ...
... happens most often when oceanic plates collide with continental plates. ...
stressed out vocab answer key
... up of hot, semisolid rock, and is located directly below the crust. Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nic ...
... up of hot, semisolid rock, and is located directly below the crust. Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nic ...
Chapter 12
... 8. Sketch a cross-section of a normal fault and a reverse fault. Label the fault plane, upthrown side, downthrown side, and fault scarp on both cross-sections. 9. What is a transcurrent fault, and what are some of the ways it might be expressed on the land surface? 10.Describe the global pattern of ...
... 8. Sketch a cross-section of a normal fault and a reverse fault. Label the fault plane, upthrown side, downthrown side, and fault scarp on both cross-sections. 9. What is a transcurrent fault, and what are some of the ways it might be expressed on the land surface? 10.Describe the global pattern of ...
Physics - WordPress.com
... HSW 12 Describe the benefits, drawbacks and risks of using new scientific and technological developments 4.7 Investigate the unpredictability of earthquakes, through sliding blocks and weights 4.8 Explain why scientists find it difficult to predict earthquakes and tsunami waves even with available d ...
... HSW 12 Describe the benefits, drawbacks and risks of using new scientific and technological developments 4.7 Investigate the unpredictability of earthquakes, through sliding blocks and weights 4.8 Explain why scientists find it difficult to predict earthquakes and tsunami waves even with available d ...
the seismicity of middle baikal according to local network of
... Southern and Central basins. The escarpment (10-150 m) was formed in Cenozoic deposits and it is the proof of the presence of WE displacement on the fault(Scholz and all., 1997). During last 150 years in Selenga seismic zone uniting tectonic infringements along southeast coast of Lake Baikal, five c ...
... Southern and Central basins. The escarpment (10-150 m) was formed in Cenozoic deposits and it is the proof of the presence of WE displacement on the fault(Scholz and all., 1997). During last 150 years in Selenga seismic zone uniting tectonic infringements along southeast coast of Lake Baikal, five c ...
The Focus and Epicenter of an Earthquake
... P waves arrive first, then S waves, then surface waves Average speeds for all these waves is known After an earthquake, the difference in arrival times at a seismograph station can be used to calculate the distance from the seismograph to the epicenter. ...
... P waves arrive first, then S waves, then surface waves Average speeds for all these waves is known After an earthquake, the difference in arrival times at a seismograph station can be used to calculate the distance from the seismograph to the epicenter. ...
06 Volcanoes and earthquakes
... the West coast of South America. Volcanoes, which often set off earthquakes, also appear in long narrow belts and their distribution around the world is very similar to that of earthquakes. Severe earthquakes occur in some of the most denselypopulated parts of the world, such as Japan and China. Col ...
... the West coast of South America. Volcanoes, which often set off earthquakes, also appear in long narrow belts and their distribution around the world is very similar to that of earthquakes. Severe earthquakes occur in some of the most denselypopulated parts of the world, such as Japan and China. Col ...
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.