AQA A Revision Guide – The Restless Earth
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
Mw 7.8, Muisne, Ecuador Fri, 16 April 2016 at 23:58:37 UTC USGS
... PGA map produced by the USGS ...
... PGA map produced by the USGS ...
Geology Library Note#391C00.cwk (WP)
... The mantle is the largest segment within the Earth accounting for 80% of the Earth’s volume. As one continues into the surface, seismic wave velocities continue to increase. However, at about 100 – 350 km depth the velocities of seismic waves are seen to decrease. What does this suggest about the st ...
... The mantle is the largest segment within the Earth accounting for 80% of the Earth’s volume. As one continues into the surface, seismic wave velocities continue to increase. However, at about 100 – 350 km depth the velocities of seismic waves are seen to decrease. What does this suggest about the st ...
Tectonic Hazards - Bedford Free School
... Earthquakes are vibrations caused by earth movements at plate margins (edges) and at major fault lines (cracks in the earth’s surface). They can occur at all major plate margins but the most severe earthquakes are normally found at CONSERVATIVE and DESTRUCTIVE margins. The point inside the crust whe ...
... Earthquakes are vibrations caused by earth movements at plate margins (edges) and at major fault lines (cracks in the earth’s surface). They can occur at all major plate margins but the most severe earthquakes are normally found at CONSERVATIVE and DESTRUCTIVE margins. The point inside the crust whe ...
Chapter 2 Lesson 3 How Do Movements Of The Earth`s Crust
... Epicenter: the point on Earth’s surface directly above the focus of an earthquake Fault: a crack in the Earth’s surface ...
... Epicenter: the point on Earth’s surface directly above the focus of an earthquake Fault: a crack in the Earth’s surface ...
Trivial Pursuit
... bigger with time. This is happening because of: a. A convergent plate boundary in the middle of the ocean. b. Volcanoes and Earthquakes c. The spreading of the oceanic plates d. Increasing amounts of rain. ...
... bigger with time. This is happening because of: a. A convergent plate boundary in the middle of the ocean. b. Volcanoes and Earthquakes c. The spreading of the oceanic plates d. Increasing amounts of rain. ...
Tectonic Impacts #3
... Electrical conductivity of rocks – in the area around earthquakes Seismographs – are able to monitor the small earthquakes that occur before a larger ...
... Electrical conductivity of rocks – in the area around earthquakes Seismographs – are able to monitor the small earthquakes that occur before a larger ...
Section 1 Review
... above an earthquakEf5staiting point, or focus. ger effect near the surface of the medium than fault zone a region ofnumerol!s, doselyspaced it has in the interior faults ...
... above an earthquakEf5staiting point, or focus. ger effect near the surface of the medium than fault zone a region ofnumerol!s, doselyspaced it has in the interior faults ...
Pre-Test: Chapter 7-Plate Tectonics
... 3. Evidence for sea-floor spreading has come from a. fossils in South America and Africa. c. ancient climatic conditions. b. magnetic minerals on the ocean floor. d. the breakup of Pangaea. ...
... 3. Evidence for sea-floor spreading has come from a. fossils in South America and Africa. c. ancient climatic conditions. b. magnetic minerals on the ocean floor. d. the breakup of Pangaea. ...
Geography
... Focus - refers to the place beneath the ground where the earthquake takes place Epicenter – is the point on the ground surface immediatly above the focus Deep focus earthquake – associated with aubduction zones. ...
... Focus - refers to the place beneath the ground where the earthquake takes place Epicenter – is the point on the ground surface immediatly above the focus Deep focus earthquake – associated with aubduction zones. ...
Section 1 Review
... move in a back-and-forth direction parallel to the direction in which the wave is traveling shadow zone an area on Earth's surface where no direct seismic waves from a particular earthquake can be detected surface wave a seismic wave that travels along the surface of a medium and that has a stron g ...
... move in a back-and-forth direction parallel to the direction in which the wave is traveling shadow zone an area on Earth's surface where no direct seismic waves from a particular earthquake can be detected surface wave a seismic wave that travels along the surface of a medium and that has a stron g ...
From Kutch to Kashmir: Lessons for Use pdf, 437kb
... It is clear to many people that India is especially prone to earthquakes and the various forms of destruction they cause, but it is not widely known why this is so. By looking at the history of India over millions of years, we can try to understand this phenomenon. ...
... It is clear to many people that India is especially prone to earthquakes and the various forms of destruction they cause, but it is not widely known why this is so. By looking at the history of India over millions of years, we can try to understand this phenomenon. ...
Compared to the desolate surface of the Moon, Earth must have
... A seismograph records the motion of the ground. Originally, a drum covered with paper rotates under a pen. The pen moves from one end of the cylinder to the other creating a helical spiral line around the cylinder. A sensor converts the motion of the ground into an electrical signal which is amplifi ...
... A seismograph records the motion of the ground. Originally, a drum covered with paper rotates under a pen. The pen moves from one end of the cylinder to the other creating a helical spiral line around the cylinder. A sensor converts the motion of the ground into an electrical signal which is amplifi ...
tsunami - Tull13
... A tsunami starts when a huge volume of water quickly shifted this rapid movement can happen as the result of an underwater earthquake (when the sea floor quickly moves up or down (a rock slide, a volcanic eruption, or another high – energy event. ...
... A tsunami starts when a huge volume of water quickly shifted this rapid movement can happen as the result of an underwater earthquake (when the sea floor quickly moves up or down (a rock slide, a volcanic eruption, or another high – energy event. ...
The Earth
... cause earthquakes, volcanoes, and tsunamis. – Steps to reach goal: • 1. What are tectonic plates? • 2. What are earthquakes, volcanoes, and tsunamis? • 3. Where are they located? • 4. Can this information help us figure out how tectonic plates cause earthquakes, volcanoes, and tsunamis? ...
... cause earthquakes, volcanoes, and tsunamis. – Steps to reach goal: • 1. What are tectonic plates? • 2. What are earthquakes, volcanoes, and tsunamis? • 3. Where are they located? • 4. Can this information help us figure out how tectonic plates cause earthquakes, volcanoes, and tsunamis? ...
MOVEMENT OF EARTH’S CRUST
... compressional, and transversal. Tension: are forces that pull crustal rocks apart. Compression: are forces that squeeze crustal rock together. Shearing: are forces that push crustal rock horizontally and in ...
... compressional, and transversal. Tension: are forces that pull crustal rocks apart. Compression: are forces that squeeze crustal rock together. Shearing: are forces that push crustal rock horizontally and in ...
Earth_Yesterday_Today_and_Tomorrow
... the rubbing and friction create great pressure. An earthquakes results! ( pg.44) ...
... the rubbing and friction create great pressure. An earthquakes results! ( pg.44) ...
Earth, Yesterday, Today and Tomorrow
... the rubbing and friction create great pressure. An earthquakes results! ( pg.44) ...
... the rubbing and friction create great pressure. An earthquakes results! ( pg.44) ...
Transform Boundary
... creating the three types of plate boundaries: Divergent, Convergent and Transform. These boundaries create many different types of landforms on Earth. ...
... creating the three types of plate boundaries: Divergent, Convergent and Transform. These boundaries create many different types of landforms on Earth. ...
Logarithmic Scales
... Definition: The Richter scale, which measures the magnitude of earthquakes, was developed in 1935 by Charles F. Richter at the California Institute of Technology. The magnitude is determined by readings of the seismic waves resulting from the earthquake's vibrations. For example, microearthquakes ...
... Definition: The Richter scale, which measures the magnitude of earthquakes, was developed in 1935 by Charles F. Richter at the California Institute of Technology. The magnitude is determined by readings of the seismic waves resulting from the earthquake's vibrations. For example, microearthquakes ...
Review for Quiz #8 – Earthquakes and Volcanoes
... 10. What are smaller earthquakes that occur in an area shortly after a larger earthquake called? Aftershocks 11. What type of stress causes normal faults? ...
... 10. What are smaller earthquakes that occur in an area shortly after a larger earthquake called? Aftershocks 11. What type of stress causes normal faults? ...
File
... the asthenosphere. where does this happen? An area that sinks beneath What is a subduction zone? a less dense plate during convergence What happens at a convergent boundary involving two oceanic plates? ...
... the asthenosphere. where does this happen? An area that sinks beneath What is a subduction zone? a less dense plate during convergence What happens at a convergent boundary involving two oceanic plates? ...
AQA A Revision Guide – The Restless Earth
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
... As the oceanic plate goes deeper into mantle it melts in the subduction zone, due to friction and the increased temperature. The newly molten rock is lighter that that which surrounds it, so it will rise towards the surface and cause volcanoes on the Earth's surface. The continental crust is crumple ...
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.