Tsunami atch?v=PljZOj5knzo

Slides:



Advertisements
Similar presentations
Earthquakes Nelson’s Class 2008.
Advertisements

Friday, March 23 nd 1 Attendance 2 Go over Review Sheet Test Pass Back papers.
Locating the Epicenter of an Earthquake
 Waves of energy that travel through the earth after rock has been elastically deformed 1. The crust layer is stressed and begins to deform 2. If the.
AIM: Describe the origin of an earthquake, types of seismic waves and how earthquakes are measured and their epicenter located? OBJ: Given notes and activity.
4.2 Earthquakes & Seismic Waves. earthquakes - movements or shaking of the ground when rock (plates) move suddenly and release energy. aftershock – a.
Lesson 2 – Earthquakes and seismic waves
Chapter 11 Earthquakes.
Inside Earth Chapter 2.2 Pages 64-70
Earthquakes.
Earthquakes.
Earthquakes.
Ch 15 Earthquakes I. Earthquake – the shaking of Earth’s crust caused by a release of energy; vibrations made from rocks breaking.
Lab 2: The Interior of the Earth Key Q: What is the interior of the Earth like?
Measuring CH 5 Prentice Hall p CH 5 Prentice Hall p Earthquakes.
Earthquakes Essential Question: How has earthquakes shaped our Earth?
EARTHQUAKES 2007 Japan quake.
Earthquakes. Earthquake Terms An earthquake is a trembling of the Earth caused by a sudden release of energy stored in subsurface rock units (on the Moon.
Glencoe Chapter 9 ©2005 LikeScience.com. Faults Rocks break and move along surfaces called faults.
Earthquakes Chapter 19. Focus vs. Epicenter _________– where the rock breaks and seismic waves begin; can be at deep or shallow depths _________ – point.
Section WHAT IS AN EARTHQUAKE?  An earthquake is a movement of Earth’s crust caused by a release of energy WHAT CAUSES AN EARTHQUAKE?  Eruption.
Earthquakes The movement of the ground, caused by waves from energy released as rocks move along faults.
Chapter 11 Earthquakes Study Guide.
Earthquakes.  Earthquakes Result from Stress What is an Earthquake? –Definition :  Shaking of a crust by a release of energy – Results :  1. Explosions,
Earthquakes and Seismic Waves  Caused by pressures generated through plate tectonics. Plates try to move but cannot. As pressure increases rock breaks.
Earthquakes On Shaky Ground. Earthquakes The shaking of the Earth’s surface Caused by faulting beneath the surface –Faults are when the rock splits and.
Earthquakes. By: Laura Barjarow Chapter 12.. Earthquakes A movement or trembling of the ground that is caused by a sudden release of energy when rocks.
Aim: What are Earthquakes and their characteristics? I. Earthquakes – any vibrating, shaking, or rapid motion of Earth’s crust. A. Fault – zone of weakness.
Investigation 2 Facts The Interior of the Earth. Fault A break in Earth ’ s crust where rock on one side moves in relation to rock on the other side.
Earthquakes. All earthquakes start beneath Earth’s surface. Focus of an earthquake: the point underground where rocks first begin to move Epicenter: the.
Earthquakes.
EARTH’S INTERIOR. EARTH’S DYNAMIC SURFACE CHARACTERIZED BY CONTINUOUS CHANGE CHARACTERIZED BY CONTINUOUS CHANGE EARTHQUAKES SEEM TO HAPPEN IN SPECIFIC.
Earthquake Waves Focus: point in Earth where energy is released Epicenter: point on surface above earthquake.
Do Now Describe the last earthquake you can remember. (location, strength, time of day, how it felt, etc.) Where do earthquakes occur? Why do earthquakes.
Seismology.
What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.
Earthquakes. What is an earthquake? Earthquake: a sudden release of energy in earth’s crust that causes movement.
EARTHQUAKES. Earthquake Causes The bending and breaking of wooden craft sticks are similar to how rocks bend and break When a force is first applied to.
Chapter 19: Earthquakes. What are Earthquakes? Natural vibrations of the ground caused by movement in fractures in Earth’s crust or sometimes volcanic.
Earthquakes. Causes of Earthquakes An earthquake is a shaking of Earth’s crust caused by a release of energy Mostly caused by the strain that builds.
EARTHQUAKES. Rocks move along faults…  A fault is a fracture or break in the Earth’s lithosphere where blocks of rock move past each other.  Along some.
 Energy travels as seismic waves which are vibrations caused by earthquakes.  All earthquakes start beneath the earth’s surface.
Students know how to identify transverse and longitudinal waves in mechanical media such as springs, ropes, and the Earth (seismic waves).
Objectives How does the energy of an earthquake travel through Earth? What are the scales used to measure the strength of an earthquake? How do.
Earthquakes. Causes of Earthquakes An earthquake is a shaking of Earth’s crust caused by a release of energy Mostly caused by the strain that builds.
Earth Quakes.
EARTH’S INTERIOR.
Chapter 12 Earthquakes.
Ground Deformation: Faulting and Folding Earthquakes and Mountain- Building.
Do Now Which type of boundary creates new lithosphere/oceanic crust?
Lithosphere-Earthquakes Unit
Earthquakes Chapter 11.
Earthquakes.
Lithosphere-Earthquakes Unit
Earthquakes & Plate Tectonics
Earthquakes.
Earthquakes Chapter 19.
CH. 14 Vocabulary test study guide
The average length of an earthquake is from 30 to 60 seconds.
Do Now Describe the last earthquake you can remember. (location, strength, time of day, how it felt, etc.) Where do earthquakes occur? Why do earthquakes.
Earthquakes.
Earthquakes.
Whole Lot of Shaking Going On
Earthquakes.
Earthquakes.
Earthquakes Chapter 12 Section 1
EARTH’S INTERIOR.
Earthquakes & Seismic Waves
EARTH’S INTERIOR.
Presentation transcript:

Tsunami atch?v=PljZOj5knzo

Earthquakes

Damage vs. Magnitude (Energy)

Earthquakes and volcanoes are not randomly distributed over the globe At the boundaries between plates, friction causes them to stick together. When built up energy causes them to break, earthquakes occur. Figure showing the distribution of earthquakes around the globe Where do earthquakes form?

Rocks on both sides of a fault are pressed together tightly locked by friction When they finally, slip, vibrations occur A movement or trembling of the ground that is caused by a sudden release of energy when rocks move along a fault line

Figure showing the tectonic setting of earthquakes

The location within the Earth along a fault at which the first motion of an Earthquake occurs Focus:

The point on the Earth’s surface above the focus Epicenter:

Primary Wave Motion is back and forth in the direction of travel Fastest of the waves and can travel through solids, liquids, and gases Compression wave P-Wave

Secondary Wave Motion is side to side compared to direction of travel Second fastest and can only travel through solids Shear Waves S-Wave:

A seismic wave that travels along the surface and has a stronger effect; converted P and S wave, causes the most damage Surface Waves:

Led to more in depth knowledge of the Earth’s interior Various densities and phases are shown by wave deflection S waves blocked by liquid outer core P waves change direction as they pass through the cores Waves in the Interior of the Earth

Waves in the Interior of the Earth:

Finding the earthquake location Seismograms – a record written by a seismograph in response to an earthquake, explosion, or other ground-motion sources. Seismograph – An instrument used to detect and record earthquakes. imations/how_seismograph_works.htm

Difference between P and S Waves

The longer the time difference between the arrival of the P and S waves, the farther from the epicenter Once you have the distance to the epicenter, using readings from three stations, you can determine the location by creating circle with that distance as the radius. The point where the three circles meet is the location of the epicenter Determining the Location

Earthquake Detection To find the exact location of an earthquake, you need to have (3) different stations reporting the results of their respective seismograms. The scientists then create a VENN DIAGRAM to see where all of the data INTERSECTS. ture/ stm

Earthquake Exit Slip Focus Epicenter Fault Wave Fronts B

Earthquake Exit Slip S-Wave P-Wave Surface Waves Seismograph Seismogram F. G. H. I. Fastest of the waves and can travel through solids, liquids, and gases J. Waves that can only travel through solids E.