Earthquake Webquest
... 1. What’s an earthquake? (read the selection and fill in the missing words) Earthquakes occur because of a sudden release of stored___________. This energy has built up over long periods of time as a result of tectonic forces within the earth. Most earthquakes take place along ________in the upper 2 ...
... 1. What’s an earthquake? (read the selection and fill in the missing words) Earthquakes occur because of a sudden release of stored___________. This energy has built up over long periods of time as a result of tectonic forces within the earth. Most earthquakes take place along ________in the upper 2 ...
view slides
... Only events that included a depth phase (pP or sP) were included Data set includes 26 “ground truth events” developed by bomb monitoring community Possible to map brittle & ductile strain Work by Steck, Velasco and others, 1997 ...
... Only events that included a depth phase (pP or sP) were included Data set includes 26 “ground truth events” developed by bomb monitoring community Possible to map brittle & ductile strain Work by Steck, Velasco and others, 1997 ...
Chapter 9: Earthquakes
... a) causes rocks on either side of a fault to move past each other C. Types of Faults 1. Normal Fault a) Tension pulls the rocks apart b) Rock above the fault surface moves downward in relation to rock below the fault surface c) Dia. 2. Reverse Fault a) Compression Pushes on Rocks from opposite direc ...
... a) causes rocks on either side of a fault to move past each other C. Types of Faults 1. Normal Fault a) Tension pulls the rocks apart b) Rock above the fault surface moves downward in relation to rock below the fault surface c) Dia. 2. Reverse Fault a) Compression Pushes on Rocks from opposite direc ...
S05_4359_L05
... Earthquake Triangulation Using P and S-waves P and S waves travel at different speeds through the Earth and can be used to locate earthquake epicenters. Many approaches can be used. One method is to start by assuming the seismometers are far enough (50 to 500 km) from a shallow earthquake and that t ...
... Earthquake Triangulation Using P and S-waves P and S waves travel at different speeds through the Earth and can be used to locate earthquake epicenters. Many approaches can be used. One method is to start by assuming the seismometers are far enough (50 to 500 km) from a shallow earthquake and that t ...
Magnitude 5.8 Moderate Earthquake in Baja California
... A moderate earthquake occurred Wednesday morning Portland time in Baja California, Mexico about 21 miles southeast of Mexicali and 107 miles east of Tijuana. The circle with surrounding rings on left-side map below illustrates the epicenter of this earthquake as determined by the US Geological Surve ...
... A moderate earthquake occurred Wednesday morning Portland time in Baja California, Mexico about 21 miles southeast of Mexicali and 107 miles east of Tijuana. The circle with surrounding rings on left-side map below illustrates the epicenter of this earthquake as determined by the US Geological Surve ...
Mid-Continent Earthq..
... Midcontinent earthquakes Real-life examples New Madrid Tangshan Sichuan ...
... Midcontinent earthquakes Real-life examples New Madrid Tangshan Sichuan ...
What is an earthquake?
... a certain limit (elastic limit), after which they fail and release the energy. • Energy waves produced by an earthquake are called Seismic Waves. ...
... a certain limit (elastic limit), after which they fail and release the energy. • Energy waves produced by an earthquake are called Seismic Waves. ...
CH. 8 Review WS 2
... 18. The place on the Earth’s crust directly above the place where an earthquake starts is called the focus. 19. Vibrations released during an earthquake are called focus waves. 20. The higher the lines on a seismogram, the weaker the earthquake. 21. A tsunami forms when the epicenter of an earthquak ...
... 18. The place on the Earth’s crust directly above the place where an earthquake starts is called the focus. 19. Vibrations released during an earthquake are called focus waves. 20. The higher the lines on a seismogram, the weaker the earthquake. 21. A tsunami forms when the epicenter of an earthquak ...
Topic 12 Earth`s Dynamic Crust and Interior
... Topic 12 Earth’s Dynamic Crust and Interior Lithosphere: Crust: Small Scale Crustal Changes Law of Original Horizontality: What are three ways that rock layers are changed? ...
... Topic 12 Earth’s Dynamic Crust and Interior Lithosphere: Crust: Small Scale Crustal Changes Law of Original Horizontality: What are three ways that rock layers are changed? ...
Pushing Up the Sky By: Joseph Bruchac
... • Hills or mountains built up by lava and ash around an opening in Earth’s crust ...
... • Hills or mountains built up by lava and ash around an opening in Earth’s crust ...
Name - kleung
... 5. _____ A string of volcanoes that forms along a trench is called: a. An island arc c. A fissure b. A mid-ocean ridge d. A subducted plate 6. _____ Before a volcanic eruption, seismic activity seems to: a. Increase in frequency and decrease in intensity b. Decrease in both frequency and intensity c ...
... 5. _____ A string of volcanoes that forms along a trench is called: a. An island arc c. A fissure b. A mid-ocean ridge d. A subducted plate 6. _____ Before a volcanic eruption, seismic activity seems to: a. Increase in frequency and decrease in intensity b. Decrease in both frequency and intensity c ...
File
... Seismic waves: vibrations that travel through Earth carrying the energy released during an earthquake. : the first waves that expand and compress the ground like an accordion that causes particles of rock to move in a back and forth direction. P waves travel through and ...
... Seismic waves: vibrations that travel through Earth carrying the energy released during an earthquake. : the first waves that expand and compress the ground like an accordion that causes particles of rock to move in a back and forth direction. P waves travel through and ...
Geology * Part II - Hatboro
... 1. An earthquake is the shaking and trembling that results from the movement of rock beneath Earth’s surface 2. Earthquakes occur because of stress built up in rock. Stress is a force that acts on a rock to change its shape or volume. These stresses cause faults (a break or crack in Earth’s lithosph ...
... 1. An earthquake is the shaking and trembling that results from the movement of rock beneath Earth’s surface 2. Earthquakes occur because of stress built up in rock. Stress is a force that acts on a rock to change its shape or volume. These stresses cause faults (a break or crack in Earth’s lithosph ...
Name
... Name of the fault line that runs along California and causes most of the CA earthquakes. Name the Missouri fault that caused major earthquake between 1811 and 1812 and would cause damage in Indiana if an earthquake occurred today. Which city burnt down in an earthquake in 1906? Most U.S. earthquake ...
... Name of the fault line that runs along California and causes most of the CA earthquakes. Name the Missouri fault that caused major earthquake between 1811 and 1812 and would cause damage in Indiana if an earthquake occurred today. Which city burnt down in an earthquake in 1906? Most U.S. earthquake ...
Document
... Active faults and their resultant earthquakes in northern Pakistan and adjacent parts of India and Afghanistan are the direct result of the convergence between the India and Eurasia plates. This collision is causes uplift that produces the highest mountain peaks in the world including the Himalayan, ...
... Active faults and their resultant earthquakes in northern Pakistan and adjacent parts of India and Afghanistan are the direct result of the convergence between the India and Eurasia plates. This collision is causes uplift that produces the highest mountain peaks in the world including the Himalayan, ...
Dozens Killed by Earthqukes in Iran
... US Secretary of State Condoleezza Rice said: “We are always prepared to extend humanitarian assistance to people around the world.” The earthquakes have been classified as moderate, but such quakes have killed thousands of people in the past in the Iranian countryside where houses are often made of ...
... US Secretary of State Condoleezza Rice said: “We are always prepared to extend humanitarian assistance to people around the world.” The earthquakes have been classified as moderate, but such quakes have killed thousands of people in the past in the Iranian countryside where houses are often made of ...
Document
... • Richter scale, do not provide accurate estimates for large magnitude earthquakes • Measures how much energy is released. • Today we use Moment magnitude scale, abbreviated MW • works over a wider range of earthquake sizes and is applicable globally ...
... • Richter scale, do not provide accurate estimates for large magnitude earthquakes • Measures how much energy is released. • Today we use Moment magnitude scale, abbreviated MW • works over a wider range of earthquake sizes and is applicable globally ...
Ch. 8, 9, 10 Study Guide
... 42. What is significant about the mountains that surround Thousand Oaks? They used to be located under water AND they used to be active volcanoes 45. What is the Geothermal Gradient? rate at which temperature changes with depth below the Earth’s surface 46. List the type(s) of plate boundaries were ...
... 42. What is significant about the mountains that surround Thousand Oaks? They used to be located under water AND they used to be active volcanoes 45. What is the Geothermal Gradient? rate at which temperature changes with depth below the Earth’s surface 46. List the type(s) of plate boundaries were ...
THE ORIGINS OF
... scientists to the China quake of 1975, but those warning signals are easily overlooked in California, which experiences thousands of tremors every year. As for last week's earthquake, seismologists said that there were one or two ...
... scientists to the China quake of 1975, but those warning signals are easily overlooked in California, which experiences thousands of tremors every year. As for last week's earthquake, seismologists said that there were one or two ...
• Introduction • Seismic Waves • Effects of Earthquakes • Earthquake
... • P-waves - travel through solids and fluids • S-waves - only travel through solids – Slower than P waves ...
... • P-waves - travel through solids and fluids • S-waves - only travel through solids – Slower than P waves ...
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.