Aftershock—an earthquake that follows a larger earthquake, or main
... many different frequencies. Every object has a natural rate of vibration that scientists call its natural frequency. The natural frequency of a building depends on its physical characteristics, including the design and the building materials. ...
... many different frequencies. Every object has a natural rate of vibration that scientists call its natural frequency. The natural frequency of a building depends on its physical characteristics, including the design and the building materials. ...
Podcast Outline Key - KMS 8th Science
... not in the Allegheny Mountains as that is no longer an active convergent Himalayas or boundary) Allegheny/Appalachian Mountains ...
... not in the Allegheny Mountains as that is no longer an active convergent Himalayas or boundary) Allegheny/Appalachian Mountains ...
From Crust to Core: EarthScope comes to Yukon
... Yukon earthquakes There were 195 recorded earthquakes in Yukon in 2014. Most earthquakes go unnoticed, but occasionally larger events are felt. Since 1985, 4151 earthquakes have occurred within the Yukon, 17 with magnitudes greater than 5.0. The largest Yukon earthquake in the past 30 years occurre ...
... Yukon earthquakes There were 195 recorded earthquakes in Yukon in 2014. Most earthquakes go unnoticed, but occasionally larger events are felt. Since 1985, 4151 earthquakes have occurred within the Yukon, 17 with magnitudes greater than 5.0. The largest Yukon earthquake in the past 30 years occurre ...
Compilation of activites
... - What happens underground during an earthquake - What happens above ground during an earthquake - Where do earthquakes tend to occur. Why to earthquakes occur in these areas 2. Begin a class discussion regarding earthquakes that they have remembered (or heard about). Allow the students to use their ...
... - What happens underground during an earthquake - What happens above ground during an earthquake - Where do earthquakes tend to occur. Why to earthquakes occur in these areas 2. Begin a class discussion regarding earthquakes that they have remembered (or heard about). Allow the students to use their ...
STRUCTURAL GEOLOGY Continental Drift and Seafloor Spreading
... The fault plane is the surface where the break has occurred. The hanging wall is the rock on the upper side of the fault plane and the footwall is the rock on the underside of the fault plane. Up thrown rock has moved upward and down thrown rock has moved down. The three types of faults are normal, ...
... The fault plane is the surface where the break has occurred. The hanging wall is the rock on the upper side of the fault plane and the footwall is the rock on the underside of the fault plane. Up thrown rock has moved upward and down thrown rock has moved down. The three types of faults are normal, ...
Tarapacб intermediate-depth earthquake - meteo
... for horizontal components and N-S bars for upward and downward displacements respectively. The inset indicates the 3-component time series of station PICB. (c) Interpretation of the seismological and geodetic fault parameters in a WestEast cross section (20°S). Light-blue circles are background seis ...
... for horizontal components and N-S bars for upward and downward displacements respectively. The inset indicates the 3-component time series of station PICB. (c) Interpretation of the seismological and geodetic fault parameters in a WestEast cross section (20°S). Light-blue circles are background seis ...
Managing Earthquakes and Volcanoes
... • Impacts of Mt St Helen’s volcanic eruption (on people and environment) • Kashmir and Los Angeles earthquakes: impacts explained (think about the difference between rich and poor countries) • Reasons why people live near earthquakes and volcanoes ...
... • Impacts of Mt St Helen’s volcanic eruption (on people and environment) • Kashmir and Los Angeles earthquakes: impacts explained (think about the difference between rich and poor countries) • Reasons why people live near earthquakes and volcanoes ...
GCSE Geography Revision Pack: Key Themes Paper Natural
... plate boundary. A result of a build up of stress / pressure inside the earth’s crust that is caused by the sudden jerking movements of the fault, and are almost impossible to predict. Plate movement is not smooth, plates rub & cause friction & ‘stick’. Pressure builds up until the plates snap & stre ...
... plate boundary. A result of a build up of stress / pressure inside the earth’s crust that is caused by the sudden jerking movements of the fault, and are almost impossible to predict. Plate movement is not smooth, plates rub & cause friction & ‘stick’. Pressure builds up until the plates snap & stre ...
Volcanic eruptions - 2015-Sec3-Geog
... Hazards associated with earthquakes Threat of tsunamis • Tsunami refers to an usually large sea wave. • Tsunamis may be formed by: - The movement of the sea floor during a large earthquake at subduction zones; - An underwater volcanic eruption; - An underwater landslide; and - A landslide above sea ...
... Hazards associated with earthquakes Threat of tsunamis • Tsunami refers to an usually large sea wave. • Tsunamis may be formed by: - The movement of the sea floor during a large earthquake at subduction zones; - An underwater volcanic eruption; - An underwater landslide; and - A landslide above sea ...
Earthquake Powerpoint
... rupture occurs • EPICENTER = geographic point on surface directly above focus • SEISMIC WAVES produced by the release of energy – move out in circles from the point of rupture (focus) – 2 types: surface & body (travel inside & through earth’s layers) • P waves: back and forth movement of rock; trave ...
... rupture occurs • EPICENTER = geographic point on surface directly above focus • SEISMIC WAVES produced by the release of energy – move out in circles from the point of rupture (focus) – 2 types: surface & body (travel inside & through earth’s layers) • P waves: back and forth movement of rock; trave ...
Physical Geology - Geol 1330 (07610) - Spring
... b) location of divergent plate boundaries c) location of subducting plates d) location of transform plate boundaries 42. Mantle plumes are thought to originate at/in the: a) base of the crust b) core c) deep mantle 43. The rate of motion of plates at, e.g. mid-ocean ridges and transform boundaries i ...
... b) location of divergent plate boundaries c) location of subducting plates d) location of transform plate boundaries 42. Mantle plumes are thought to originate at/in the: a) base of the crust b) core c) deep mantle 43. The rate of motion of plates at, e.g. mid-ocean ridges and transform boundaries i ...
Surface Waves
... • More than 1,000,000 occur a year or one every 30 seconds • Faulting is the most common cause • Earthquakes continue until all the energy is used up • TSUNAMIS- earthquake on the ocean floor: causing waves to become greater than 20 meters high ...
... • More than 1,000,000 occur a year or one every 30 seconds • Faulting is the most common cause • Earthquakes continue until all the energy is used up • TSUNAMIS- earthquake on the ocean floor: causing waves to become greater than 20 meters high ...
powerpoint jeopardy
... 1. Crouch down under a table or something sturdy and cover your head. 2. If outside, lie face down with your head away from buildings, power lines, and trees. 3. If in a car, pull over but remain inside. ...
... 1. Crouch down under a table or something sturdy and cover your head. 2. If outside, lie face down with your head away from buildings, power lines, and trees. 3. If in a car, pull over but remain inside. ...
Seismic Waves - Fort Thomas Independent Schools
... (3) a shear stress (moving past) (4) torsion stress (twisting) ...
... (3) a shear stress (moving past) (4) torsion stress (twisting) ...
Effects of an earthquake on the land
... The movement of plates causes a build up of stress energy in the rocks. Rocks will bend and fracture. When the stress energy is suddenly released an earthquake occurs. The rocks breaks, creating a fault, or slips along an existing fault. The release of energy sends out seismic waves that shake the g ...
... The movement of plates causes a build up of stress energy in the rocks. Rocks will bend and fracture. When the stress energy is suddenly released an earthquake occurs. The rocks breaks, creating a fault, or slips along an existing fault. The release of energy sends out seismic waves that shake the g ...
HERE
... • Can travel through the entire Earth. Through liquids (outer core) and solids (inner core). • The type of wave is called compression. It compresses (squeezes) the matter it’s moving through. (*** your chem teacher might call it longitudinal) • Click HERE for P-waves animation ...
... • Can travel through the entire Earth. Through liquids (outer core) and solids (inner core). • The type of wave is called compression. It compresses (squeezes) the matter it’s moving through. (*** your chem teacher might call it longitudinal) • Click HERE for P-waves animation ...
The Restless Earth - Heathcote School & Science College
... The rock jolts and grinds, causing earthquakes ...
... The rock jolts and grinds, causing earthquakes ...
Plate Tectonic Notes
... b) faults visible at surface, large earthquakes c) San Andres Fault in California ...
... b) faults visible at surface, large earthquakes c) San Andres Fault in California ...
Describing Matter & Energy
... moves across another surface. Friction exists because surfaces are not perfectly smooth. ...
... moves across another surface. Friction exists because surfaces are not perfectly smooth. ...
TECTONIC PLATES
... The locations of volcanoes can also help identify the locations of plate boundaries. Some volcanoes form when plate motions generate magma that erupts on Earth’s surface. For example, the Pacific Ring of Fire is a zone of active volcanoes that encircles the Pacific Ocean. This zone is also one of Ea ...
... The locations of volcanoes can also help identify the locations of plate boundaries. Some volcanoes form when plate motions generate magma that erupts on Earth’s surface. For example, the Pacific Ring of Fire is a zone of active volcanoes that encircles the Pacific Ocean. This zone is also one of Ea ...
Earthquakes
... How is an Earthquake’s Epicenter Located? – P waves arrive first, then S waves, then L and R – 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. ...
... How is an Earthquake’s Epicenter Located? – P waves arrive first, then S waves, then L and R – 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. ...
Unit 3 Plate Tectonics, Volcanoes and Earthquakes
... Here you will learn about how the plates of the earth’s crust interact. Write down the examples in your notes and turn to page 5 in your Reference Table to see this diagram. ...
... Here you will learn about how the plates of the earth’s crust interact. Write down the examples in your notes and turn to page 5 in your Reference Table to see this diagram. ...
What caused the tsunami
... The outer crust of the earth is like a jigsaw. It is broken into huge pieces called plates. These plates move around very slowly. Where the plates meet they grind together and cause earthquakes. Volcanic eruptions also happen here. The Indian Ocean earthquake occurred just west of Sumatra where the ...
... The outer crust of the earth is like a jigsaw. It is broken into huge pieces called plates. These plates move around very slowly. Where the plates meet they grind together and cause earthquakes. Volcanic eruptions also happen here. The Indian Ocean earthquake occurred just west of Sumatra where the ...
Hydroacoustic monitoring of seismicity at the slow
... et al., 1987] and Atlantis at 30°N [Blackman et al., 1998]) have earthquakes associated with them, suggesting active faulting. The major transforms and associated fracture zones (Oceanographer, Hayes, Kane, Atlantis, Fifteen-Twenty) are quiet relative to the spreading segments during the year’s depl ...
... et al., 1987] and Atlantis at 30°N [Blackman et al., 1998]) have earthquakes associated with them, suggesting active faulting. The major transforms and associated fracture zones (Oceanographer, Hayes, Kane, Atlantis, Fifteen-Twenty) are quiet relative to the spreading segments during the year’s depl ...
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.