CHAPTER 15 SOME NATURAL PHENOMENA
... fragmented into many plates. These plates are moving continuously. When these plates brush past each other or when one plate goes under another plate due to collision, they cause disturbance and causes earthquakes. The boundaries of the plates are weak zones called siesmic zones or fault zones. Eart ...
... fragmented into many plates. These plates are moving continuously. When these plates brush past each other or when one plate goes under another plate due to collision, they cause disturbance and causes earthquakes. The boundaries of the plates are weak zones called siesmic zones or fault zones. Eart ...
adult - Old Colony Council
... earthquakes occur. The very largest earthquakes are at subduction zones where two plates get stuck together for centuries, then suddenly let go.) 8. Now let’s look at a transform plate boundary. Try sliding the two cookie pieces laterally past one another, over the creamy filling. What do you notice ...
... earthquakes occur. The very largest earthquakes are at subduction zones where two plates get stuck together for centuries, then suddenly let go.) 8. Now let’s look at a transform plate boundary. Try sliding the two cookie pieces laterally past one another, over the creamy filling. What do you notice ...
Cream Cheese and Jelly Sandwich Faults
... faults and this is where most of the earthquakes that occur are found. The edges of plates are rough and they ...
... faults and this is where most of the earthquakes that occur are found. The edges of plates are rough and they ...
File
... energy. This energy builds up over time due to the motion of crustal plates. When the energy is released, one plate suddenly moves relative to another—this causes seismic waves to travel through the surrounding rock. Primary waves, or P-waves, travel the fastest, so they are the first to arrive at s ...
... energy. This energy builds up over time due to the motion of crustal plates. When the energy is released, one plate suddenly moves relative to another—this causes seismic waves to travel through the surrounding rock. Primary waves, or P-waves, travel the fastest, so they are the first to arrive at s ...
Collecting Data: Article for Students
... to the GPS in your phone or car, these devices use satellites to identify any location on Earth. But this equipment is even more accurate, so it can measure a position within a few millimeters. Over time, GPS can detect tiny movements in the crust — an important sign of an active fault. It also dete ...
... to the GPS in your phone or car, these devices use satellites to identify any location on Earth. But this equipment is even more accurate, so it can measure a position within a few millimeters. Over time, GPS can detect tiny movements in the crust — an important sign of an active fault. It also dete ...
Causes of Tsunami - Tsunami: Magnitude of Terror
... Tectonic earthquakes are a kind of earthquake that can caused that. When they occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. Waves are formed as the displaced water mass, acting under the force of gravity, tries to regain equilibrium. When large ...
... Tectonic earthquakes are a kind of earthquake that can caused that. When they occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. Waves are formed as the displaced water mass, acting under the force of gravity, tries to regain equilibrium. When large ...
Plate Tectonics
... move away from each other (diverge). When they move apart from each other a ‘gap’ is created. The gap is filled with hot, molten lava that solidifies when it reaches the surface (meeting either the sea or air). Land is therefore formed. Earthquakes and volcanoes are associated with constructive plat ...
... move away from each other (diverge). When they move apart from each other a ‘gap’ is created. The gap is filled with hot, molten lava that solidifies when it reaches the surface (meeting either the sea or air). Land is therefore formed. Earthquakes and volcanoes are associated with constructive plat ...
Slide 1
... EQ = Movement of E’s lithosphere that occurs when rocks in the lithosphere suddenly shift, releasing stored energy. EQs occur b/c stress forces of have exceeded the strength of rock. Stress builds when rocks along 2 sides of a fault snag and lock (friction) as stress builds – so does POTENTIAL ENERG ...
... EQ = Movement of E’s lithosphere that occurs when rocks in the lithosphere suddenly shift, releasing stored energy. EQs occur b/c stress forces of have exceeded the strength of rock. Stress builds when rocks along 2 sides of a fault snag and lock (friction) as stress builds – so does POTENTIAL ENERG ...
Faults and the Elastic Rebound Theory
... before we understood why the strain had built up in the crust before the earthquake. We know now that it was due to plate tectonics. The Pacific Plate is slowly grinding past the North American Plate along the San Andreas Fault. But the San Andreas Fault is stuck, so the crust deforms elastically as ...
... before we understood why the strain had built up in the crust before the earthquake. We know now that it was due to plate tectonics. The Pacific Plate is slowly grinding past the North American Plate along the San Andreas Fault. But the San Andreas Fault is stuck, so the crust deforms elastically as ...
Faults brochure Een revised 9
... • A fault is a large crack in the Earth's crust where one part of the crust has moved against another part. This movement means that faults prove the Earth is an active place. They are signs of powerful forces deep underground. ...
... • A fault is a large crack in the Earth's crust where one part of the crust has moved against another part. This movement means that faults prove the Earth is an active place. They are signs of powerful forces deep underground. ...
Lecture 11
... • Plates move relative to one another at 1-15 cm/yr • Plate interiors are largely undisturbed • Deformation is concentrated at plate boundaries ...
... • Plates move relative to one another at 1-15 cm/yr • Plate interiors are largely undisturbed • Deformation is concentrated at plate boundaries ...
Tsunamis - GEOCITIES.ws
... Tsunami is a Japanese word meaning ‘Harbour Wave’. In the past the scientific community sometimes referred to them as ‘tidal waves’ or ‘seismic sea waves’. Tsunamis are the hydrosphere’s most destructive force. They are giant waves that are caused by sudden movement of the seabed during an earthqua ...
... Tsunami is a Japanese word meaning ‘Harbour Wave’. In the past the scientific community sometimes referred to them as ‘tidal waves’ or ‘seismic sea waves’. Tsunamis are the hydrosphere’s most destructive force. They are giant waves that are caused by sudden movement of the seabed during an earthqua ...
Evidence of plate movement
... • Shallow earthquakes occur at all plate boundaries, and even in the middle of plates. Deep earthquakes only occur at some plate boundaries – why? • Why might the depth of an earthquake be related to the amount of damage it causes? ...
... • Shallow earthquakes occur at all plate boundaries, and even in the middle of plates. Deep earthquakes only occur at some plate boundaries – why? • Why might the depth of an earthquake be related to the amount of damage it causes? ...
Review for Earthquakes Test
... 2. What scale is traditionally used to measure magnitude? Richter Scale 3. Each increase in magnitude number represents a 10-fold increase in energy released. 4. What does intensity measure? Intensity measures the type of damage done by the earthquake as well as people’s reactions to the earthquake. ...
... 2. What scale is traditionally used to measure magnitude? Richter Scale 3. Each increase in magnitude number represents a 10-fold increase in energy released. 4. What does intensity measure? Intensity measures the type of damage done by the earthquake as well as people’s reactions to the earthquake. ...
Towering Toothpick Disaster: An Earthquake Kit Er Student
... crust meets thicker, less dense continental crust at a convergent plate boundary, the more dense oceanic crust is forced under the continental crusl. As the solid rock is forced-to bend into tne asinenosphere, stress builds along the faults in the subducted oceanic rock. This causes the rocks to mov ...
... crust meets thicker, less dense continental crust at a convergent plate boundary, the more dense oceanic crust is forced under the continental crusl. As the solid rock is forced-to bend into tne asinenosphere, stress builds along the faults in the subducted oceanic rock. This causes the rocks to mov ...
December 26, 2004 Indian Ocean Earthquake & Tsunami
... • Often mistakenly called "tidal waves“. • They have nothing to do with tidal action. • Seismic sea waves caused by earthquakes, submarine landslides, and, infrequently, by eruptions of island volcanoes. ...
... • Often mistakenly called "tidal waves“. • They have nothing to do with tidal action. • Seismic sea waves caused by earthquakes, submarine landslides, and, infrequently, by eruptions of island volcanoes. ...
PDF here
... 5. What tectonic plate are you currently on ? (Hint: think of where the plate boundary is located near you. Look on a map to find this boundary, and your location at CSUN. Try Google maps with topography/terrain. You can also find local faults on iris.edu – seismic monitor – click on a recent earth ...
... 5. What tectonic plate are you currently on ? (Hint: think of where the plate boundary is located near you. Look on a map to find this boundary, and your location at CSUN. Try Google maps with topography/terrain. You can also find local faults on iris.edu – seismic monitor – click on a recent earth ...
Quaking, Shaking, Earth
... Reverse Fault • Reverse faults result from compression forces that squeeze rock. • If rock breaks from forces pushing from opposite directions, rock above a reverse fault surface is forced up and over the rock below the fault surface. ...
... Reverse Fault • Reverse faults result from compression forces that squeeze rock. • If rock breaks from forces pushing from opposite directions, rock above a reverse fault surface is forced up and over the rock below the fault surface. ...
1 NATURAL DISASTERS (GLY 125: 001, 002) Version #2 Exam # 1
... b. The lithosphere is denser than the mantle. c. The asthenosphere is the more rigid equivalent of the mantle. d. The asthenosphere is the more plastic part of the mantle. e. The mantle is everywhere more rigid than the crust. 14. Which of the following is true? a. Oceanic rift zones are found only ...
... b. The lithosphere is denser than the mantle. c. The asthenosphere is the more rigid equivalent of the mantle. d. The asthenosphere is the more plastic part of the mantle. e. The mantle is everywhere more rigid than the crust. 14. Which of the following is true? a. Oceanic rift zones are found only ...
Earth Science 8.2 Measuring Earthquakes
... In 2003, a powerful earthquake shook Alaska wilderness south of Fairbanks along the Denali front. This earthquake was so strong it shook ponds in Louisiana and Texas. Seismic waves carry the energy released from an earthquake hundreds of kilometers away. Seismic waves transmit the energy of these vi ...
... In 2003, a powerful earthquake shook Alaska wilderness south of Fairbanks along the Denali front. This earthquake was so strong it shook ponds in Louisiana and Texas. Seismic waves carry the energy released from an earthquake hundreds of kilometers away. Seismic waves transmit the energy of these vi ...
Unit 4: Crustal Change
... Earthquake: ( see text p.224-225) 1. Seismic Waves are recorded by a Seismograph (text p.222). 2. The seismic tracing is called a seismogram (text p.223) ...
... Earthquake: ( see text p.224-225) 1. Seismic Waves are recorded by a Seismograph (text p.222). 2. The seismic tracing is called a seismogram (text p.223) ...
Finding Earthquake Epicenters - High School of Language and
... Seismic stations record movements in the lithosphere with seismographs, and create seismograms – pictures of the waves arriving at the station. Earthquakes shake the lithosphere in a few different ways, and because of this, several different types of seismic waves are produced. The fastest of these ...
... Seismic stations record movements in the lithosphere with seismographs, and create seismograms – pictures of the waves arriving at the station. Earthquakes shake the lithosphere in a few different ways, and because of this, several different types of seismic waves are produced. The fastest of these ...
Objective Recovery Packet Unit 2
... Step 3 (Star 3): Essential Question: What is the composition of Earth and how does that affect the lithosphere? In your answer, include the forces that drive the rock cycle (for example: heat, pressure, gravity), and include a drawing of the layers of the lithosphere, including the composition (what ...
... Step 3 (Star 3): Essential Question: What is the composition of Earth and how does that affect the lithosphere? In your answer, include the forces that drive the rock cycle (for example: heat, pressure, gravity), and include a drawing of the layers of the lithosphere, including the composition (what ...
Notes on Tectonic Hazards - WJEC Geography A
... The earth’s crust is divided into a series of plates. These plates are either oceanic (thin and dense) or continental (thick). Radioactive reactions occur inside the core which produces convection currents in the mantle. This causes the tectonic plates to move. At mid-ocean ridges, there is a ...
... The earth’s crust is divided into a series of plates. These plates are either oceanic (thin and dense) or continental (thick). Radioactive reactions occur inside the core which produces convection currents in the mantle. This causes the tectonic plates to move. At mid-ocean ridges, there is a ...
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.