Earthquakes Cornell Notes page 121.

Slides:

Advertisements

Similar presentations

Advertisements

EARTHQUAKES. DEFINITION: EARTHQUAKES DEFINITION: a violent trembling of the earth’s surface.

Ch6 Sec2 Earthquakes and Seismic Waves. Key Concepts How does the energy of an earthquake travel through Earth? What are the scales used to measure the.

Earthquake Measurement

Earthquakes and Seismic Waves

2/13/15 Bell Ringer (L32) How are mid-ocean trenches formed?

Measuring Earthquakes

4.2 Notes  An earthquake is the shaking and trembling that results from movement of rock beneath Earth’s surface.

Earthquake Review.

Inside Earth Chapter 2 Earthquakes 2.2 Earthquakes and Seismic Waves.

 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.

Aim: What are Earthquakes and their characteristics? I. Earthquakes – any vibrating, shaking, or rapid motion of Earth’s crust. A. Fault – zone of weakness.

Aim: What are Earthquakes and their characteristics? I. Earthquakes – any vibrating, shaking, or rapid motion of Earth’s crust. A. Fault – zone of weakness.

Earthquakes and Seismic Waves 2-1. What is an Earthquake? Shaking and trembling that results from the movement of rock beneath Earth’s surface Occur when.

EARTHQUAKES. INTRODUCTION TO EARTHQUAKES Earthquake = a vibration of the Earth produced by the release of energy. Seismology is the study of earthquakes.

 Earthquake = the shaking and trembling that results from movement of rock beneath Earth’s surface  Focus = area beneath Earth’s surface where rock.

Earthquakes Aim: What causes earthquakes?. Stress Stress (stored energy) is created in the crust as the plates move around. Faults are breaks in the rock.

Earthquakes A sudden shaking of earth as rocks break along a fault or plate boundary A sudden shaking of earth as rocks break along a fault or plate boundary.

Earthquakes Pages C14-17.

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.

Earthquake Vocabulary Notes. Causes of Earthquakes As the crust tries to move, pressure builds When crust finally moves, pressure and energy is released.

Earthquakes Cornell Notes page 117.

Chapter 12 Earthquakes.

Earthquakes Chapter Notes.

Earthquakes and Volcanoes

Earthquakes and Seismic Waves

Ch.5, Sec.2 - Earthquake Measurement

Earthquakes and Seismic Waves (Part 2)

Earthquake Notes.

Earthquakes Geology Unit: Slides

Measuring Earthquakes Chapter

Earthquakes!!!!!!!!!

Earthquakes & Plate Tectonics

Earthquake Measurement

Ch Earthquakes Earthquakes are caused gigantic fractures in the Earth’s crust, which produce ground vibrations. The pressure (force/area) acting.

Chapter 5 Earthquakes.

There are more than 30,000 earthquakes worldwide each year!

Do First Questions: What mechanical layer of the Earth are plates made of? What mechanical layer of the Earth is moving causing the plates to move?

Section 6.2: Earthquakes and seismic waves

Earthquakes Shake, Rattle and Roll.

earthquake: shaking and trembling that results from sudden movement of part of the Earth’s crust

Do Now: How do we measure earthquakes?.

Do First Questions: What mechanical layer of the Earth are plates made of? What mechanical layer of the Earth is moving causing the plates to move?

Earthquakes Vocab.

A numerical scale used to measure the magnitude or energy released

Earthquakes MT 5.

Earthquake Measurement

Chapter 12 - Section 2 Measuring Earthquakes

Whole Lot of Shaking Going On

Chapter 12 - Section 2 Measuring Earthquakes

Earthquakes and Seismic Waves

What are the three types of plate boundaries?

Earthquake Measurement

Chapter 5.2 Earthquakes and seismic waves

Earthquakes Cornell Notes page 121.

Earthquakes February 2013.

Presentation transcript:

Earthquakes Cornell Notes page 121

What is seismology? The study of earthquakes

Earthquakes Shaking or trembling of the Earth’s surface Creates seismic waves that flow on and through Earth Earthquakes

Sudden movements in Earth’s crust What causes Earthquakes? Sudden movements in Earth’s crust Stress builds up until rock finally breaks Volcanic activity, Landslides, and Nuclear Tests

Earthquakes do NOT cause the crust to move- The moving crust causes Earthquakes!!

Where do Earthquakes usually occur? Plate boundaries and faults

Parts of an Earthquake: Focus Underground origin of earthquake

Earthquake: Epicenter Parts of an Earthquake: Epicenter location of an earthquake directly above the focus on surface.

Seismograph an instrument that measures vibrations in the ground, used to determine strength of an earthquake

An alternative seismic instrument…

The Richter Scale Uses recordings of Seismographs to determine amount of energy released. Scale of 1-10 Each successive unit is ten times more powerful than the one before. A 7.0 on the Richter scale is 1000 times more powerful than an earthquake measuring 4.0.

The Mercalli Intensity Scale Classifies EQ’s based on what is felt by people and the amount of damage caused Uses roman numerals Scale: I - XII

Scale II Felt indoors by few

Scale IV Felt indoors by many, outdoors by few

Scale VI Felt by all, indoors and outdoors. Moved furniture

Scale VIII Fright general - alarm approaches panic.

Scale XII Damage total - practically all buildings damaged greatly http://www.abag.ca.gov/bayarea/eqmaps/doc/mmi.html

What’s the largest Earthquake in the U.S.? Alaska 115 died-- most deaths due to the tsunami Shaking was felt earthquake of March 27, 1964. It had a magnitude of 9.2. for an estimated 7 minutes raised or lowered the ground approx. 56 feet in some places. length of the ruptured fault was 621 miles. energy released was equal to 12,000 Hiroshima-type blasts.

Largest in World… Chile (1960)- 9.5