Earthquake Intensity and Magnitude

Slides:

Advertisements

Similar presentations

Measuring Earthquakes

Advertisements

Earthquake Waves Chapter 6-2. Focus and epicenter Actual location of fault Up to 700 km below surface.

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.

Section 19.3 – Measuring and Locating Earthquakes

Rāhina, 17 Paenga-whāwhā, 2017Rāhina, 17 Paenga-whāwhā, 2017

UNIT 7 The Earth’s dynamics Natural Science 2. Secondary Education HOW AN EARTHQUAKE’S STRENGTH IS MEASURED.

Magnitude verses Intensity!

Earthquake Measurement

Ch – Measuring and Locating Earthquakes Essential Questions

Copyright © 2014 All rights reserved, Government of Newfoundland and Labrador Earth Systems 3209 Unit: 4 The Forces Within Earth Reference: Chapters 4,

Measuring Earthquakes. Seismograph Or seismometer, is an instrument used to detect and record earthquakes.

Richter and Mercalli Scales

Measuring Earthquakes By: Lily and Assul. Earthquakes  They can release a huge amount of energy or a very little amount  It depends on how much rock.

 Earthquakes are measured on 2 different scales  The Richter Scale – measures the magnitude of the earthquake (amplitude and how much energy is released)

Measuring Earthquakes

Intro Objective 10/31/12 Locate the epicenter and focus of an earthquake Which is more powerful, an Earthquake, or a: A.hand grenade? B.stick of dynamite?

Earth Science Notes Measuring Earthquakes. Recall: Seismic Waves show up on a seismograph.

How Earthquakes are Located and Measured By Jacob and Christian.

Section 2: Studying Earthquakes

Earthquakes!. Seismic Waves General Info  Seismic waves are the energy released when rocks break along faults.  Focus = the point within the Earth’s.

Measuring Earthquakes. Earthquakes ronment/environment-natural- disasters/earthquakes/earthquake-101/

Inside Earth Chapter 2 Earthquakes 2.2 Earthquakes and Seismic Waves.

EARTHQUAKES (DAY 2) Earth’s Structure. Do Now: 1. What type of wave will arrive first? 2. What type of wave can only travel through solids? 3. What is.

On which faults have major earthquakes have occurred since the 1906 San Francisco Earthquake? The Great California ShakeOut.

Logarithmic Functions. Example1. On the Richter Scale, the magnitude R of an earthquake of intensity I is given by where I 0 is a certain minimum intensity.

Part 3 Seismometers and Seismograms A seismogram is the record produced by a seismometer (or seismograph).

How do we measure earthquakes? LO: to understand the difference between the Richter scale and the Mercalli scale.

Earthquake Waves Chapter 6-2. Focus and epicenter Actual location of fault Up to 700 km below surface.

Lesson 10.4Common Logarithms Common Logarithm:base 10 logarithms (without subscript 10) Example 1Finding Common Logs & Change of Base A) B)C)

QUIZ What is Seismology?

Do Now – In Notebooks 1. What is an earthquake? 2. What kind of stress acts on a normal fault? Does the crust lengthen or shorten? 3. What is the difference.

People and Earthquakes (47) Scientists who study earthquakes and seismic waves are seismologists The height of the lines traced on the paper of a seismograph.

 Seismologists use two scales when classifying earthquakes. 2) Modified Mercalli Scale 1) Richter Scale.

Earthquake Scales Richter vs. Mercalli. What is an earthquake? Earthquakes are the vibration of the earth as a result of a release of energy – Earthquakes.

How do scientists know the structure of the Earth? Rock samples (direct evidence) Seismic waves (indirect evidence) –Vibrations that travel through Earth.

EARTHQUAKES, SEISMIC WAVES, & MONITORING SYSTEMS.

Earthquake Location & Size. 3 Major Zones 1.Ring of Fire: Around the Pacific plate Type of Boundary: -Transform fault and convergent boundary.

Measuring Earthquakes (5-2 Notes). Magnitude = a measure of an earthquake’s strength Based on seismic waves.

Measuring Earthquakes. Seismograph Is an instrument used to detect and record seismic waves.

Earthquakes Standard 3d. Students know why and how earthquakes occur and the scales used to measure their intensity and magnitude.

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.

Topic: Earthquake Measurement PSSA: A / S8.D.1.1.

Earthquakes! Richter scale.  Developed in California at Cal Tech by Charles Richter in 1935  Based on the specific rocks found there  Only measures.

Earthquakes Pages C14-17.

Tools to Measure an Earthquake Mercalli & Richter Scales Seismometers/Seismograms Mercalli & Richter Scales Seismometers/Seismograms.

I can tell the difference between a fault & a fold. - I can explain the differences between the P & S Waves. - I understand safety precautions for an earthquake.

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

EARTHQUAKES Part II .

Notes 11 Earthquake Magnitude.

Chapter 8 Section 2.

Section 3: Measuring and Locating Earthquakes

Why do earthquakes occur? How do we measure them?

“Measuring Earthquakes”

8.2 – Measuring Earthquakes – Part II

Measuring and Predicting Earthquakes

Earth Quakes Tectonics NOTES page 3 ©Mark Place,

Earthquake Measurement

Using Distances to known Earthquake epicenters, create

EARTHQUAKES! Part 2.

Chapter 12-2 Studying Earthquakes.

Earthquake Waves Chapter 6-2.

Section 3: Measuring and Locating Earthquakes

Locating Earthquakes Chapter F5

Chapter 12 - Section 2 Measuring Earthquakes

Chapter 12 - Section 2 Measuring Earthquakes

Scales used to measure earthquakes

Earthquakes February 2013.

Presentation transcript:

Earthquake Intensity and Magnitude Mercalli Scale vs Richter Scale

Richter Scale Created by Charles Richter in 1935. Created to specifically measure EQ in Southern California. Also referred to as Local Magnitude ML

Richter Scale Measures the magnitude of an earthquake Strength Measured using the height of the “wiggles” on a seismogram Uses a logarithmic scale A 6 releases 30 times more energy then a 5. 3.0 = 397 pounds of TNT 4.0 = 6 tons of TNT An important number for scientist

Mercalli Scale Used to measure the intensity of a quake How much damage it did Measures the impact on people and the built environment Based on eye witness reports and damage reports Scale from I-XII