EARTHQUAKES EARTHQUAKES WHAT YOU NEED TO KNOW!. TECTONIC PLATES EARTHQUAKES HAPPEN AT TECTONIC PLATE BOUNDARIES.

Slides:

Advertisements

Similar presentations

PLATE TECTONICS IN THE ZONE DAMAGE SEISMIC WAVES 1pt 1 pt 1 pt 1pt

Advertisements

Finding the Distance to the Epicenter of an Earthquake!

 List the names of the interior layers of the Earth beginning with the core.  But wait, we didn’t learn that…… where ever could we find such information?

Locating the Epicenter of an Earthquake

Dynamic Crust: Earthquakes

Chapter 4 The Dynamic Crust

Locating the Epicenter of an Earthquake

Tsunami atch?v=PljZOj5knzo

Ms. Hartnett's Earth Science

Earth Science Regents Review

Earthquakes  What they are  Where they occur  How fast they travel  How to locate their centers  Their strength.

Lab 2: The Interior of the Earth Key Q: What is the interior of the Earth like?

Earthquakes Chapter 6. Elastic Rebound Theory Rocks on either side of a fault move slowly When locked, stress builds…until fault ruptures Rocks fracture.

Measuring CH 5 Prentice Hall p CH 5 Prentice Hall p Earthquakes.

Chapter 12: Earthquakes. Where do earthquakes tend to occur? Earthquakes can occur anywhere, but they tend to occur on and near tectonic plate boundaries.

Glencoe Chapter 9 ©2005 LikeScience.com. Faults Rocks break and move along surfaces called faults.

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.

Hosted by Miss Bernal Category 1Category 2Category 3Category

Earthquakes Chapter 11 P. Lobosco

Earthquakes and Plate Tectonics Our Violent Earth.

Aim: What is an earthquake? Do now: In your notes, explain where most earthquakes occur and Why? Japan.

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.

What is an Epicenter? A point on Earth’s surface where EQ originates. Focus: A point of an EQ within the Earth.

Objectives  I will know what earthquakes are and how they are monitored on earth  I will be able to analyze graphs and data to draw conclusion about.

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.

Name: __________________ Period: _______ Date: ______________.

DO NOW REVIEW FROM BEFORE THE VACATION

EARTH’S INTERIOR. EARTH’S DYNAMIC SURFACE CHARACTERIZED BY CONTINUOUS CHANGE CHARACTERIZED BY CONTINUOUS CHANGE EARTHQUAKES SEEM TO HAPPEN IN SPECIFIC.

Aim: What is an earthquake?

Earthquakes. Earthquakes A natural vibration of the ground caused when the stress built up between tectonic plates is suddenly released. There are three.

Earthquake Waves Focus: point in Earth where energy is released Epicenter: point on surface above earthquake.

Learning log Describe what you think is happening during an earthquake. Essential Question: What causes earthquakes, how do we know where they are, and.

SEISMIC WAVE BASICS.

Chapter 12, Section 1 Chapter 10, Section 2 Objective 1

SEISMIC WAVE BASICS. Finding an Epicenter What is an Epicenter? A point on the surface of the Earth directly above the FOCUS of the earthquake. The point.

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. What is an Earthquake? Sudden movement in the earth’s crust which releases energy Movement occurs along areas of weakness in the earth’s.

Chapter 12 Earthquakes.

Earthquake Let’s shake, rattle and roll Earthquake Basics Earthquake – shaking of Earth’s crust caused by the sudden release of energy Energy build over.

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.

Earthquakes Vibration of the Earth produced by the rapid release of energy. ….. Massive energy! Earthquakes occur along plate boundaries at points called.

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with faulting or breaking of rocks Continuing.

SEISMIC WAVE BASICS. Finding an Epicenter ESRT TABLES – GRAPH PAGE 11.

CHAPTER 12 EARTHQUAKES MOVEMENTS OF THE EARTH THAT ARE CAUSED BY A SUDDEN RELEASE OF ENERGY WHEN ROCKS MOVE ALONG A FAULT.

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

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

Goal  Locate the epicenter of an earthquake. What is an Epicenter? A point on the surface of the Earth directly above the FOCUS of the earthquake. The.

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

SEISMIC WAVE BASICS. Finding an Epicenter ESRT TABLES – GRAPH PAGE 11.

EARTH’S INTERIOR.

Chapter 12 Earthquakes.

ANALYZING SEISMIC WAVES

Locating the Epicenter of an Earthquake

SEISMIC WAVE BASICS.

Locating the Epicenter of an Earthquake

SEISMIC WAVE BASICS.

Geology Constructive and Destructive Forces at Work.

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.

Locating the Epicenter of an Earthquake

Aim: How can we explain Earthquakes?

EARTHQUAKES & PLATE TECTONICS

Chapter 15 Earthquakes.

Do Now: According to the seismogram below, What time did the P wave arrive?

EARTH’S INTERIOR.

EARTH’S INTERIOR.

Presentation transcript:

EARTHQUAKES EARTHQUAKES WHAT YOU NEED TO KNOW!

TECTONIC PLATES EARTHQUAKES HAPPEN AT TECTONIC PLATE BOUNDARIES

ANALYSIS OF SEISMIC WAVES HAVE RESULTED IN THE INFERENCE ABOUT EARTH’S INTERIOR S WAVES CANNOT PASS THROUGH THE LIQUID OUTER CORE

EARTHQUAKE SHADOW ZONES NO WAVES OCCUR BETWEEN 105º -140º S WAVES DISAPPEAR FROM 105º NEVER TO APPEAR AGAIN

CONVECTION CURRENTS IN THE ASTHENOSPHERE CAUSE THE PLATES TO MOVE IN DIFFERENT DIRECTIONS – LOOK AT ARROWS DIVERGING CONVERGING

Seafloor spreading

NORTH WEST SOUTH EAST SAN ANDREAS FAULT PACIFIC PLATE WEST SIDE MOVES NORTH NORTH AMERICAN PLATE EAST SIDE MOVES SOUTH

P WAVES Primary waves (compression waves) vibrate parallel to the direction of movement. (push-pull like a slinky) Travel faster than any other wave (6-8 km./s) Travel through solids, liquids, and gases

S WAVE Secondary wave (shear waves) vibrate side to side to the direction the wave is moving Slower than P waves (4-5 kms./s) TRAVEL THROUGH SOLIDS ONLY

Finding an Earthquake Epicenter

What is an Epicenter? A point on the surface of the Earth directly above the FOCUS of the earthquake. The point within the Earth from which earthquake waves originate.

Use the data from the recording stations: Station A: San Francisco, California P-Wave arrival 3:02:20S-Wave arrival 3:06:30 What is the time difference between P and S wave arrivals?

Use the data from the recording stations: Station B: Denver, Colorado P-Wave arrival 3:01:40S-Wave arrival 3:05:00 What is the time difference between P and S wave arrivals?

Use the data from the recording stations: Station C: Missoula, Montana P-Wave arrival 3:01:00S-Wave arrival 3:03:00 What is the time difference between P and S wave arrivals?

Difference in arrival times: San Francisco: 4:10 Denver, Colorado: 3:20 Missoula, Montana: 2:00

TAKE A PIECE OF PAPER, AND MARK OFF THE DIFFERENCE IN ARRIVAL TIME 2800Km 4:10

MOVE THE PAPER UNTIL THE TWO TICK MARKS LINE UP WITH THE P AND S CURVES WHEN TICK MARKS LINE UP, GO STRAIGHT DOWN AND READ THE EPICENTER DISTANCE EPICENTER DISTANCE OF 2800 KM

EPICENTER DISTANCES San Francisco: 4:10 Denver, Colorado: 3:20 Missoula, Montana 2:00 2,800 km 1,100 km 2,000 km

Recording Board Difference in arrival times: San Francisco: 41:0 2,800 km 1,000 2,000 3,000 4,0005,000 Line your compass up to the EXACT distance on the scale. Use the metric side (cm) beginning from zero. 0

...

Where do most of the earthquakes in the U.S. occur?

Tsunami (giant sea wave)

REMEMBER!

Emergency Preparedness Plan: 1.Duck and cover 2.Evacuation route and safe place to go to 3.Supply of clean water, food, blankets, flashlight, batteries, med.