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Primary and Secondary Waves

Primary and Secondary Waves

Primary and Secondary Waves. (“The Slinky”). An Overview of Seismic Waves. (“The Rope”). The Outline. The Types of Seismic Waves Seismic Wave Velocities P and S Wave Shadow Zones Seismographs P and S Waves Help Locate Earthquakes The S Wave and The Richter Scale Nuclear Testing

By EllenMixel
(718 views)

What are Earthquakes?

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

By jacob
(323 views)

Seismology: Wave Propagation

Seismology: Wave Propagation

Seismology: Wave Propagation. Art McGarr Based on lectures by James Mori and Dave Boore . Contents. ・ Rays Snell ’ s Law Structure of the Earth ・ Seismic Waves Near-Field Terms (Static Displacements) Far-Field Terms (P, S, Surface waves) ・ Normal modes

By libra
(285 views)

Spaceship Earth: Our oasis in the emptiness of space.

Spaceship Earth: Our oasis in the emptiness of space.

Spaceship Earth: Our oasis in the emptiness of space. . *. *. *. o. 15 – 20 C. Our star, the Sun, has a profound influence on the climate on Earth. Here, a solar flare is shown, as well as “granules” on the Sun’s surface.

By donkor
(155 views)

Layers of the Earth

Layers of the Earth

Layers of the Earth. For third and forth graders By Jennie Lahr Student at Northern Michigan University. Introduction. The earth has four main layers Crust Mantle Outer Core Inner Core. The Earth’s Crust. Very thin compared to the other three layers

By hashim
(368 views)

Six Strands of Technology 1900-2010

Six Strands of Technology 1900-2010

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

By loren
(467 views)

Earthquakes

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.

By kory
(116 views)

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

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.

By elewa
(148 views)

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 (

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. ____________________

By lam
(112 views)

WAVES

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

By kassia
(135 views)

We have been talking about minerals primarily in the earth’s crust What About the rest??

We have been talking about minerals primarily in the earth’s crust What About the rest??

We have been talking about minerals primarily in the earth’s crust What About the rest??. dicontinuities. Harzburgite (80%olv 20%OPX). lithosphere. Lherzolite (60%olv 40%OPX, grt). MOHO. asthenosphere. Pyrolite (lherzolite-like). Upper mantle. Olivine  b -spinel. 410. Pyroxene 

By zola
(127 views)

EARTHQUAKES

EARTHQUAKES

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

By ellie
(2 views)

Earthquakes

Earthquakes

Earthquakes. Facts. About 500,000 occur yearly. Of those the vast majority aren’t even felt. On average, 1 magnitude 8 quake every year, somewhere. Large quakes can destroy cities, cause midslides, generate giant sea waves, burst damns or trigger volcanic eruptions. Facts.

By doctor
(0 views)

Earthquakes

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.

By dyre
(120 views)

Unit 3: Plate Tectonics & Earthquakes

Unit 3: Plate Tectonics & Earthquakes

Unit 3: Plate Tectonics & Earthquakes. By: Tiffany Gilboy & Stephen Holly. “The tectonic plates “floats” on the asthensphere because they are less dense.”. Like Ice in Water.

By egan
(159 views)

What are Earthquakes?

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 ?.

By dextra
(141 views)

Unit 3 Test

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.

By gayle
(167 views)

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

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

http://www.earthquakes.bgs.ac.uk/earthquakes/education/eq_booklet/dia_seismogram.jpg. This is a picture of the P wave shadow zone. Waves bend as they hit the liquid outer core. There’s a shadow zone at the surface, into which seismic waves from A cannot travel – it’s actually a ring of points.

By halden
(202 views)

Features of Plate Tectonics

Features of Plate Tectonics

Features of Plate Tectonics. Chapter 12.2 BC Science 10. A Cross-Section of Earth. The Layers of Earth. Earth is over 1200 km thick and has four distinct layers: Crust – outer solid rock layer (granite on land, basalt in oceans)

By cleta
(182 views)

Earth’s Dynamic Crust

Earth’s Dynamic Crust

Earth’s Dynamic Crust. Aim: What is meant by “Dynamic Crust” and what evidence can we observe to support it? Do Now Open your review books to p. 245 In Figure 12-1 Diagram D label layers 2,3,4, and 5 using your scheme for sedimentary rock identification (ESRT)

By kovit
(215 views)

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