'S waves ' diaporamas de présentation

Features of Plate Tectonics

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Unit 3: Plate Tectonics & Earthquakes

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Unit 3 Test

Unit 3 Test. Review. QUESTION 1. What causes the movement of the tectonic plates? a. Convection c. Subduction b. Radiation d . Convergence. QUESTION 1. What causes the movement of the tectonic plates? a. Convection c. Subduction b. Radiation d . Convergence. QUESTION 2.

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Six Strands of Technology 1900-2010

Six Strands of Technology 1900-2010. CLICK ON ANY TIMELINE TO GO INDIVIDUAL TOPICS. AVIATION & SPACE . TECHNOLOGY .

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THE 2012 WESTERN PACIFIC TYPHOON SEASON As of September 20, 2012

THE 2012 WESTERN PACIFIC TYPHOON SEASON As of September 20, 2012. Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA. THE FORECAST FOR THE 2012 PACIFIC TYPHOON SEASON.

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Seismology: Wave Propagation

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Spaceship Earth: Our oasis in the emptiness of space.

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http://www.earthquakes.bgs.ac.uk/earthquakes/education/eq_booklet/dia_seismogram.jpg

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What are Earthquakes?

What are Earthquakes?. The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing adjustment of position results in aftershocks. What is the Elastic Rebound Theory ?. Explains how energy is stored in rocks

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Objectives 1. Compare the 3 types of seismic waves. 2. Discuss the method scientists use to pinpoint an Earthquake (

Objectives 1. Compare the 3 types of seismic waves. 2. Discuss the method scientists use to pinpoint an Earthquake (EQ). 3. Discuss the method most commonly used to measure the magnitude of EQs. 3 major Types of Seismic Waves. Move fastest. P waves : primary wave. ____________________

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What are Earthquakes?

What are Earthquakes?. A sudden motion or shaking in the Earth caused by the abrupt release of slowly accumulated strain. Usually associated with faulting or breaking of rocks Continuing adjustment of position results in aftershocks. What is the Elastic Rebound Theory ?.

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Primary and Secondary Waves

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WAVES

WAVES. WAVES. a disturbance that transfers energy. Carries energy from one place to another Classified by what they move through Mechanical Waves the energy is transferred by vibrations of medium (medium = matter) ex/ ocean waves move through water

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Earthquakes

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Earthquakes

Earthquakes. Sudden shaking and vibration of the ground caused by movement of the earth along a fault. Earthquakes occur due to the elastic rebound theory. When movement is initiated along a fault seismic waves radiate outward from the focus Which are recorded using seismographs.

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Layers of the Earth

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Earthquakes

Earthquakes. earthquake. The shaking that results from the movement of rock beneath Earth's surface. Earthquakes. focus The point beneath Earth's surface where rock breaks under stress and causes an earthquake. Epicenter The point on Earth's surface directly above an earthquake's focus.

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EARTHQUAKES

EARTHQUAKES. Elastic Rebound Theory: As tectonic plates move, friction interferes with forward motion. The plates shift, and this causes an earthquake.

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