Earthquakes. Define earthquake Large vibrations that move through rock or other Earth materials Movement of the ground that occurs when rocks inside the.

Slides:

Advertisements

Similar presentations

Earthquakes and Volcanoes

Advertisements

Mrs. Bartley’s Earthquakes

Chapter 11 Earthquakes.

How and Where Do Earthquakes Occur?

Earthquakes. Earthquakes - The movement of the ground, caused by waves of energy released as rocks move along faults Fault – a large fracture in rocks,

Chapter Eleven Earthquakes.

Chapter 8 Earthquakes.

Ch 15 Earthquakes I. Earthquake – the shaking of Earth’s crust caused by a release of energy; vibrations made from rocks breaking.

Seismicity & Earthquakes

What is an Earthquake? Movement of the ground that occurs when rock inside the Earth pass their elastic limit, break suddenly, and experience elastic rebound.

Earthquakes Essential Question: How has earthquakes shaped our Earth?

EARTHQUAKES 2007 Japan quake.

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.

Earthquakes Pages B104-B127. Faults are classified by how rocks move. The blocks of rock along different types of faults move in different directions,

Earthquakes Green Packet.

Chapter 8. Section 1 When you bend a stick, you notice that is changes shape while you bend it The stick will spring back if you stop applying force.

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,

THIS IS With Hosts... Your Earth’s Interior Seismic Waves Faults Earthquake More Seismic Earthquake Destruction.

Section 19.1 Forces Within Earth

Earthquakes!. How does an earthquakes form?  Forces inside the earth put stress on the rocks near plate edges. Stress cause rocks to bend and stretch.

 stress -a force that acts on rock to change its shape or volume. 3 Types of Stress  tension -pulls on crust, stretching rock so it becomes thinner.

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.

1 What is an earthquake? Simply put: An earthquake is the shaking of the earth. Free powerpoint template: 1.

Earthquakes. All earthquakes start beneath Earth’s surface. Focus of an earthquake: the point underground where rocks first begin to move Epicenter: the.

Get notes packet and start vocab.  You will learn to explain how earthquakes result from the buildup of energy in rocks.  You will learn to describe.

 By the end of this unit, you should be able to:  Discuss stress and strain and their roles in earthquakes  Identify and describe the 3 types of faults.

Earthquakes. What is an earthquake? Used to describe both sudden slip on a fault, and the resulting ground shaking and radiated seismic energy caused.

Chapter 19 Notes Earthquakes.

STRESS – The amount of force exerted on a material.

QUIZ 10/21 1.What are Earthquakes? 2._____ is the deformation of a material caused by stress. 3.Describe tension stress. 4.Faulting causes rock to _________.

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.

Chapter 11: Earthquakes. Forces Inside the Earth Fault Formation: There is a limit to how far rocks can bend or move without cracking. Up to a point,

Earthquakes A whole lotta shakin’ goin’ on.. Focus Point at which there is a sudden release of energy below Earth’s surface usually along a fault. Point.

Causes of earthquakes An earthquake is defined as the shaking of the earth’s crust Can be large or small Earthquakes occur when energy is suddenly released.

1. What do seismologists use to determine when an earthquake started? A seismogram 2. How is the intensity of an earthquake determined? By the amount.

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.

CH. 8: Earthquakes and Volcanoes 8.1: Earthquakes.

Earthquakes: Earth’s Way of Releasing Stress Chapter 8: Earthquakes.

Earthquakes. Earthquakes Earthquakes are vibrations of the ground (violent shaking motions) created by the sudden release of energy accumulating in deformed.

 As you travel inside of Earth, the temperature _________________.

Section 9-3 Define seismologists, seismograph, and magnitude. Describe how the Richter scale measures an earthquake. What causes a tsunami to occur? Define.

Key Terms: Seismology - the study of earthquakes Seismology - the study of earthquakes Seismologist - a scientist who studies earthquakes and seismic.

Earthquakes. earthquakes Earthquakes are natural vibrations of the ground caused by movement along gigantic fractures in Earth’s crust or by volcanic.

Students know how to identify transverse and longitudinal waves in mechanical media such as springs, ropes, and the Earth (seismic waves).

Ch.11 Earthquakes Earth Science.

Standard S6E5: Students will understand how the distribution of land and oceans affects climate and weather. d: describe the processes that change rocks.

Chapter 14 Study Guide.

Earthquake Notes.

Lithosphere-Earthquakes Unit

Earthquakes Chapter 11.

Lithosphere-Earthquakes Unit

Plate Tectonics.

Earthquakes Waves and Faults.

CH. 14 Vocabulary test study guide

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 Chapter 11.

Presentation transcript:

Earthquakes

Define earthquake Large vibrations that move through rock or other Earth materials Movement of the ground that occurs when rocks inside the Earth pass their elastic limit, break suddenly, and experience elastic rebound.

Earthquakes Describe elastic rebound When rocks strain and then break; the broken pieces snap back

Earthquakes Describe how rocks change Rocks change, or deform, slowly over long periods of time. As they are strained, potential energy builds them up. Energy is released suddenly when rocks break and move. The movement causes vibrations that move through the Earth.

Earthquakes Faults: When a section of rock breaks, rocks on either side of the break along which rocks move might move as a result of elastic rebound.

Earthquakes Define fault The surface of a break along which a rock moves

Earthquakes Describe normal fault Caused by tension forces, rock above the fault moves down compared to rock below the fault

Earthquakes Describe reverse fault Caused by compression forces, rock above the fault moves upward compared to rock below

Earthquakes Describe strike-slip fault Caused by shear forces, rock on either side of the fault moves past one another in opposite directions

Earthquakes Earthquake waves are transmitted through materials in Earth and along Earth’s surface. Seismic waves : Earthquake waves are called seismic waves.

Earthquakes Movement along a fault releases strain energy. Strain energy is potential energy that builds up in rock when it is bent. When this potential energy is released it moves outward in the form of seismic waves.

Earthquakes Define seismic waves The release of potential energy from a strained rock that moves outward from a fault

Earthquakes Where this movement first occurs is called the focus of the earthquake.

Earthquakes Epicenter: The point on Earth’s surface located directly above the earthquake focus

Earthquakes How do seismic waves travel? P-waves Primary waves (or P-waves) cause rock to move back and forth in the same direction the waves are moving. CONT

Earthquakes How do seismic waves travel? S-waves Secondary waves (or S-waves) cause rock to vibrate at right angles to the direction the waves are moving. CONT

Earthquakes P-waves S-waves P-waves travel through solids and liquids, so they can travel through all of the Earth’s layers S-waves cannot travel through liquid rock, so they cannot travel through the outer core

Earthquakes How do seismic waves travel? surface waves Surface waves are the slowest, largest, and most destructive waves.

Earthquakes Seismograph: The instrument used to record seismic waves

Earthquakes Magnitude: The measure of energy released by the earthquake. Richter Scale: Describes the magnitude of energy an earthquake releases. Gives a number to the magnitude. CONT

Earthquakes

Richter Scale: For every increase of 1.0 on the scale the amount of energy released is 32 times more. For example, an earthquake with a magnitude of 7.5 releases 32 times more energy than one with a magnitude of 6.5.

Earthquakes Tsunamis : Seismic sea waves. -When a earthquake occurs on the ocean floor the sudden movement pushes against the water and powerful waves are produced. These waves can travel thousands of miles.

Earthquakes Tsunamis: In the open ocean the tsunamis speed can reach 600 miles per hour. Wave heights are less than a meter in deep water. At landfall wave heights can be 30 meters.

Earthquakes Seismic Safe: Able to stand up against the vibrations caused by most earthquakes.Seismic Safe: Able to stand up against the vibrations caused by most earthquakes.

Earthquakes Earthquake prediction: Difficult as no single change in Earth occurs for all earthquakes.

Earthquakes s.shtmlhttp:// s.shtmlhttp:// s.shtmlhttp:// s.shtml engineering-using-the-nxt-for-earthquake- simulation/ engineering-using-the-nxt-for-earthquake- simulation/ engineering-using-the-nxt-for-earthquake- simulation/ engineering-using-the-nxt-for-earthquake- simulation/ hquakes/Earthquake_SG.htmlhttp:// hquakes/Earthquake_SG.htmlhttp:// hquakes/Earthquake_SG.htmlhttp:// hquakes/Earthquake_SG.html and-types-of-geological-faults/ and-types-of-geological-faults/ and-types-of-geological-faults/ and-types-of-geological-faults/ ucm/Contribution%20Folders/FOSS/multimedia_ ms_1E/EarthHistory/html/earth- processes/faulting-r-ex1.htmhttp:// ucm/Contribution%20Folders/FOSS/multimedia_ ms_1E/EarthHistory/html/earth- processes/faulting-r-ex1.htmhttp:// ucm/Contribution%20Folders/FOSS/multimedia_ ms_1E/EarthHistory/html/earth- processes/faulting-r-ex1.htmhttp:// ucm/Contribution%20Folders/FOSS/multimedia_ ms_1E/EarthHistory/html/earth- processes/faulting-r-ex1.htm

Earthquakes hysics_notes/o_level_physics_notes_s_and_p_ waves.htmlhttp:// hysics_notes/o_level_physics_notes_s_and_p_ waves.htmlhttp:// hysics_notes/o_level_physics_notes_s_and_p_ waves.htmlhttp:// hysics_notes/o_level_physics_notes_s_and_p_ waves.html 6-earthquakes/deck/ http:// 6-earthquakes/deck/ http:// 6-earthquakes/deck/ http:// 6-earthquakes/deck/