Earthquake Notes - Helena High School
... Alaska released at least twice as much energy because it involved greater movements along a much larger fault plane. ...
... Alaska released at least twice as much energy because it involved greater movements along a much larger fault plane. ...
Earthquakes
... is wedged against the North American Plate, energy is built up over centuries and can cause earthquakes when this energy is released ...
... is wedged against the North American Plate, energy is built up over centuries and can cause earthquakes when this energy is released ...
Introduction to Engineering Seismology
... interior of the Earth. Earthquakes are usually caused by sudden movement of earth plates Rupture of rocks along a fault Faults are localized areas of weakness in the surface of the Earth Earth,sometimes sometimes the plate boundary itself ...
... interior of the Earth. Earthquakes are usually caused by sudden movement of earth plates Rupture of rocks along a fault Faults are localized areas of weakness in the surface of the Earth Earth,sometimes sometimes the plate boundary itself ...
Science Study Guide What is the hot molten rock
... What is the central opening in a volcanic area through which magma can escape called? ...
... What is the central opening in a volcanic area through which magma can escape called? ...
Print - The Bancroft Library
... Serious study of an earthquake had been tried before in California following the 1868 quake, but that commission suffered from insufficient funds. The 1906 commission, however, benefited from the recently established Carnegie Institution, which provided $5,000 for research expenses. The commission's ...
... Serious study of an earthquake had been tried before in California following the 1868 quake, but that commission suffered from insufficient funds. The 1906 commission, however, benefited from the recently established Carnegie Institution, which provided $5,000 for research expenses. The commission's ...
Earthquakes felt across Eastern Caribbean this morning
... shaking has stopped and you are sure exiting is safe. Be aware that some earthquakes are actually foreshocks and a larger earthquake might occur. It is important to take quick action to be safe when the ground first starts to shake. Don't wait until you're certain an earthquake is actually occurring ...
... shaking has stopped and you are sure exiting is safe. Be aware that some earthquakes are actually foreshocks and a larger earthquake might occur. It is important to take quick action to be safe when the ground first starts to shake. Don't wait until you're certain an earthquake is actually occurring ...
ppt file - Angelfire
... Earth is divided into sections called Tectonic plates that float on the fluid-like interior of the Earth. Earthquakes are usually caused by sudden movement of earth plates Rupture of rocks along a fault Faults are localized areas of weakness in the surface of the Earth,sometimes the plate boundary i ...
... Earth is divided into sections called Tectonic plates that float on the fluid-like interior of the Earth. Earthquakes are usually caused by sudden movement of earth plates Rupture of rocks along a fault Faults are localized areas of weakness in the surface of the Earth,sometimes the plate boundary i ...
Earthquakes and Earth`s interior
... 1. Explain why, in light of the elastic rebound model, that a longer period of repose along a fault might be expected to produce a larger magnitude earthquake. 2. Distinguish P- and S-waves based on the nature of the particle motions they cause and their relative speeds and abilities to travel throu ...
... 1. Explain why, in light of the elastic rebound model, that a longer period of repose along a fault might be expected to produce a larger magnitude earthquake. 2. Distinguish P- and S-waves based on the nature of the particle motions they cause and their relative speeds and abilities to travel throu ...
Chapter 10 Test Review Notes
... Soils under buildings may settle from severe shaking. Some soils under buildings become liquefied due to severe shaking. An earthquake with Richter magnitude 8 releases 961 times more energy than an earthquake with Richter magnitude 6. ...
... Soils under buildings may settle from severe shaking. Some soils under buildings become liquefied due to severe shaking. An earthquake with Richter magnitude 8 releases 961 times more energy than an earthquake with Richter magnitude 6. ...
Geology Powerpoint - Jeremy`s e
... do than your in the right place! In order for an earthquake to happen, two tectonic plates have to rub against each other. If an earthquake forms in the water than a tsunami happens. The focus is directly under the earthquake where it forms. The epicenter is directly above the focus on the earths su ...
... do than your in the right place! In order for an earthquake to happen, two tectonic plates have to rub against each other. If an earthquake forms in the water than a tsunami happens. The focus is directly under the earthquake where it forms. The epicenter is directly above the focus on the earths su ...
Orogenesis MAJOR OROGENS OF THE
... • Earthquakes are caused by tectonic activity • Tectonic activity (divergence/convergence/transverse motion) along plate boundaries cause fault zones • Most earthquakes located in narrow belts where oceanic plates subduct under continental plates ...
... • Earthquakes are caused by tectonic activity • Tectonic activity (divergence/convergence/transverse motion) along plate boundaries cause fault zones • Most earthquakes located in narrow belts where oceanic plates subduct under continental plates ...
L13_Earthquakes1
... • Slip rate aver. long-term rate of movement ( mm/yr or m/1000 yrs); risky measurement • Seismic waves produced by rupture • Faults-seismic sources; used to evaluate the earthquake risk in a given area ...
... • Slip rate aver. long-term rate of movement ( mm/yr or m/1000 yrs); risky measurement • Seismic waves produced by rupture • Faults-seismic sources; used to evaluate the earthquake risk in a given area ...
Earthquakes - Crafton Hills College
... ¾ Total energy, however, varies by an exponent of 30 (a magnitude 7 has 30 times more energy than a magnitude 6, 900 times more than a magnitude 5, and 27,000 times more than a magnitude 4). ¾ The Richter number is open ended Moment Magnitude Scale- Mw or M ¾ Seismologists like this one more ¾ Rich ...
... ¾ Total energy, however, varies by an exponent of 30 (a magnitude 7 has 30 times more energy than a magnitude 6, 900 times more than a magnitude 5, and 27,000 times more than a magnitude 4). ¾ The Richter number is open ended Moment Magnitude Scale- Mw or M ¾ Seismologists like this one more ¾ Rich ...
Why do we have earthquakes?
... vibrations travels outwards from the focus, we call these seismic waves. Epicentre ...
... vibrations travels outwards from the focus, we call these seismic waves. Epicentre ...
Seismic waves - Albert
... Effects of Earthquake Tsunamis: The earthquakes in the sea generate massive waves. It causes great damage to life and property of people living in coastal areas as well as to tourists Tsunami caused by an earthquake in the sea near Sumatra on 26th Dec,2004 hit south east Asian countries including I ...
... Effects of Earthquake Tsunamis: The earthquakes in the sea generate massive waves. It causes great damage to life and property of people living in coastal areas as well as to tourists Tsunami caused by an earthquake in the sea near Sumatra on 26th Dec,2004 hit south east Asian countries including I ...
Plate Techtonics
... fault – a break in the earth’s crust subduction zone – where one of the earth’s plates slides under another ...
... fault – a break in the earth’s crust subduction zone – where one of the earth’s plates slides under another ...
Asia Tsumani Disaster
... amount of water – The water wave generated by the displacement propagated throughout the ocean – The wave, similar to a very fast tide, overcame many low lying areas ...
... amount of water – The water wave generated by the displacement propagated throughout the ocean – The wave, similar to a very fast tide, overcame many low lying areas ...
Earthquakes, Mountains, and Volcanoes Review Puzzle What did
... 8. An opening in Earth’s crust through which magma, rock fragments, and gases erupt. __ __ __ __ __ __ __ 9. The most dangerous part of a volcanic eruption, due to its speed and temperature. Consists of a cloud of superhot dense gases and rock fragments. __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ ...
... 8. An opening in Earth’s crust through which magma, rock fragments, and gases erupt. __ __ __ __ __ __ __ 9. The most dangerous part of a volcanic eruption, due to its speed and temperature. Consists of a cloud of superhot dense gases and rock fragments. __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ ...
earthquake notes - Red Hook Central Schools
... 10. A ______________________________ is a paper print out of the shaking recorded by the seismograph. 11. Although hundreds of earthquakes occur every day around the world, most earthquakes occur along ______________________________________________________________________. 12. One famous active faul ...
... 10. A ______________________________ is a paper print out of the shaking recorded by the seismograph. 11. Although hundreds of earthquakes occur every day around the world, most earthquakes occur along ______________________________________________________________________. 12. One famous active faul ...
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.