earthquake waves definition
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What are earthquake waves? Introduction. Earthquake waves are seismic waves that are created when energy builds up in rocks and they fracture. Scientists estimate there are several million earthquakes each year. Every earthquake produces P waves and S waves but only larger earthquakes produce Love waves and Rayleigh waves.
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- == Seismic waves are waves that are a result of earthquake activi … ty in the earth. There are body and surface waves. Body waves happen inside the earth and are called P (longitudinal) and S (transverse) waves. Surface waves happen on the Earth's surface and are called Rayleigh and Love waves.
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- P and S waves. A wave is a vibration that transfers energy from one place to another without transferring matter (solid, liquid or gas). Light and sound both travel in this way. Energy released during an earthquake travels in the form of waves around the Earth. Two types of seismic wave exist, P- and S-waves. They are different in the way that they travel through the Earth. P-waves (P stands for primary) arrive at the detector first.
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Earthquake Earthquakes. An earthquake (also known as a quake, tremor or temblor) is the result of a 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.arthquakes often occur in volcanic regions and are caused there, both by tectonic faults and the movement of magma in volcanoes. Such earthquakes can serve as an early warning of volcanic eruptions, as during the Mount St. Helens eruption of 1980.
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Seismic Waves: Moving and Shaking During an Earthquake During an earthquake, energy is released in seismic waves that travel from where the earthquake starts, a place called the focus. The seismic waves radiate from the focus. Seismic waves cause intense shaking at the Earth surface that can cause buildings and roads to collapse.
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- P wave. A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.Share this page: 1  Facebook. 2  Twitter. 3  Google. 4  Email. 5  Earthquakes. 6  Latest Earthquakes. 7  Real-time Feeds & Notifications. wave. A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.
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- The third general type of earthquake wave is called a surface wave, reason being is that its motion is restricted to near the ground surface. Such waves correspond to ripples of water that travel across a lake. Surface waves in earthquakes can be divided into two types. The first is called a Love wave.
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Introduction Epicenter: The epicenter is the location on the surface of the earth directly above the focus of an earthquake. Earthquake waves (seismic waves): Earthquake waves are the shock waves created at the focus of an earthquake and sent out in all directions through the earth. Earthquake: An earthquake is the rapid vibration of the earth created by a sudden movement of large sections of rock. Seismograph: A seismograph is a device that records earthquake waves.
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- The third general type of earthquake wave is called a surface wave, reason being is that its motion is restricted to near the ground surface. Such waves correspond to ripples of water that travel across a lake. Surface waves in earthquakes can be divided into two types. The first is called a Love wave. Its motion is essentially that of S waves that have no vertical displacement; it moves the ground from side to side in a horizontal plane but at right angles to the direction of propagation.
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S wave S wave definition, a transverse earthquake wave that travels through the interior of the earth and is usually the second conspicuous wave to reach a seismograph. See more. Dictionary.com
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- seismic wave. A seismic wave is an elastic wave generated by an impulse such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface (Rayleigh and Love waves) or through the earth's interior (P and S waves).Share this page: 1  Facebook.2  Twitter. seismic wave is an elastic wave generated by an impulse such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface (Rayleigh and Love waves) or through the earth's interior (P and S waves). Share this page: 1  Facebook. 2  Twitter.
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- Waves traveling through the body of the Earth are of two main types: compressional waves (P waves) and shear waves (S waves). SOURCE B A Bolt,Nuclear Explosions and Earthquakes, W H Freeman & Co , 1976 wave motion is at right angles to the direction of travel. Any particle affected by the wave would experience a shearing motion as the
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Earthquake risk in Bangladesh Definition of earthquake - a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or Definition of earthquake - a sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or dictionary thesaurus
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2.2 During an earthquake seismic waves race out from the focus in all directions (like a pebble thrown in a pond, an earthquake produces vibrations called waves). Seismic waves carry energy from an earthquake away from the focus, through Earth's interior, and across the surface.
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Earthquake An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to toss people around and destroy whole cities.
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Seismic Waves Waves whose amplitude of moton is parallel to the surface are called Love waves (named after the mathematician A. E. H. Love who modeled them-definitely not an indication that anyone is fond of them). Rayleigh waves or ground roll waves cause the surface of the ground to move up and down.
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Rayleigh wave Rayleigh wave. Rayleigh wave n. A type of seismic surface wave that moves with a rolling motion, causing rock particles to vibrate in directions both perpendicular and parallel to the main direction of wave propagation. Rayleigh waves are slower than Love waves.
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- S-wave. n. A seismic wave that travels relatively quickly through the earth, causing the rocks it passes through to change shape, and the particles of the rocks to vibrate at right angles to the direction of wave propagation.S-waves can travel through solids but not through liquids or gases.Also called shear wave.-wave. n. A seismic wave that travels relatively quickly through the earth, causing the rocks it passes through to change shape, and the particles of the rocks to vibrate at right angles to the direction of wave propagation. S-waves can travel through solids but not through liquids or gases. Also called shear wave.
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earthquake A road broken by an earthquake. The definition of an earthquake is the release of sudden and extreme energy that is caused by shifting in the Earth's crust. Facts About Earthquakes A seismometer is used to record and measure the strength of an earthquake. The Mercalli scale is used to measure the earthquake. Anything seven or above is considered extremely dangerous. Earthquakes usually occur along fault lines, or cracks that occur within the Earth’s crust.
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tsunami A large wave on the ocean, usually caused by an undersea earthquake, a volcanic eruption, or coastal landslide. A tsunami can travel hundreds of miles over the open sea and cause extensive damage when it encounters land. Also called tidal waves.
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- Earthquake, shaking of the earth's surface caused by rapid movement of the earth's rocky outer layer. Earthquakes occur when energy stored within the earth, usually in the form of strain in rocks, suddenly releases. This energy is transmitted to the surface of the earth by earthquake waves.
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- An earthquake is a shift of a block of the Earth's crust. A tsunami is a water wave generated by underwater disturbances such an earthquake, a landslide, or perhaps a comet or an asteroid. Other underwater disturbances can also generate tsunami.
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- What Are Seismic Waves? Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an the energy that travels through the earth and is recorded on seismographs. Types of Seismic Waves There are several different kinds of seismic waves, and they all move in different ways.hat Are Seismic Waves? Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an the energy that travels through the earth and is recorded on seismographs. Types of Seismic Waves There are several different kinds of seismic waves, and they all move in different ways.
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- Copyright © 2012 K12reader.com. All Rights Reserved. Free for educational use at home or in classrooms. www.k12reader.com Earthquakes: Movement of the Earth’s Crust Word Meanings Earthquakes are the shaking and moving of the ground when energy is released in waves.These waves are called seismic waves.These waves are similar to ocean waves, which move through water. Seismic waves, however, move through the ground.Most earthquakes are caused by the movement of large sections of the Earth’s crust, called plates.The place where two plates meet is called a fault. Faults look like large cracks in the ground.hese waves are called seismic waves. These waves are similar to ocean waves, which move through water. Seismic waves, however, move through the ground.Most earthquakes are caused by the movement of large sections of the Earth’s crust, called plates.