Earthquakes MT 5.

Slides:

Advertisements

Similar presentations

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

Advertisements

Earthquakes Chapter 5. Earthquakes What causes and earthquake? 1._____________________________________ 2.Stress adds _________ to rock and ___________.

Chapter 8 Earthquakes.

EARTHQUAKES 2007 Japan quake.

Earthquakes and Tectonics Vocab Waves Boundaries General Info Random

What causes an earthquake?  Deformation- the change in shape of rock in response to stress  Elastic Rebound- Return of rock to its original undeformed.

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

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.

Earthquakes. What is an Earthquake? Earthquake—the vibration of Earth produced by the rapid release of energy – Most often caused by slippage along a.

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

Earthquakes An earthquake is the shaking or trembling of the earth caused by the _Sudden_ movement of the earth’s crust. They usually occur where rocks.

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

Chapter 12 Earthquakes.

Earthquakes Liz LaRosa 2009http://

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.

Earthquakes. What are earthquakes? The word earthquake means exactly what it says. An earthquake is when the ground shakes as a result of energy being.

Earthquakes. What’s an Earthquake? Earthquakes are movements of the ground that are caused by a sudden release of energy when along a fault move. Earthquakes.

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 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.

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

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

Chapter 12 Earthquakes.

What are earthquakes?.

Earthquakes Liz LaRosa 2009

What are Earthquakes? The shaking or trembling caused by the sudden release of energy Usually associated with lithospheric plates moving against each other.

Earthquakes Cornell Notes page 121.

Earthquakes Liz LaRosa

Chapter 12 Study Notes Earthquakes.

Chapter 12: Earthquakes.

Small Scale Crustal Change: Deformation of Earth’s Crust

Lithosphere-Earthquakes Unit

Earthquakes DYNAMIC EARTH.

Earthquakes Geology Unit: Slides

Lithosphere-Earthquakes Unit

Earthquakes!!!!!!!!!

Earthquakes & Plate Tectonics

Earthquakes Liz LaRosa

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?

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?

Modified from Liz LaRosa

Earthquakes Liz LaRosa

Unit 3: The Dynamic Earth

A numerical scale used to measure the magnitude or energy released

Earthquakes Review.

Earthquakes Liz LaRosa

What are the three types of plate boundaries?

Earthquakes Cornell Notes page 121.

Presentation transcript:

Earthquakes MT 5

Background Review At what type of plate boundaries do Earthquakes occur? In which direction do the plates travel at this boundary? Have you ever felt an earthquake? Describe the experience. What are the steps of an earthquake drill or what should you do during an earthquake?

Background Review Northridge Earthquake - 1994

Background Review San Francisco Earthquake - 1906

Background Review San Francisco Earthquake - 1989

Background Review Indian Ocean Tsunami - 2004

What causes an earthquake? Release of elastic energy from plates in Earth’s lithosphere The plates slip at the boundary in the Earth’s lithosphere

Where does the elastic energy come from? Earth’s Interior!!!

What is the Elastic Rebound Hypothesis? The explanation for the release of energy stored in deformed rocks that spring back into their original place

What are the steps of an earthquake? ***Remember: Plate boundaries form fault lines Plates on both sides of a fault push against each other & build up energy Plates (rock/crust) bend, deform, and are broken. Energy is released as seismic waves & this is shaking that is felt Rocks return to undeformed shape.

Anatomy of an Earthquake

Where do earthquakes take place? ***Remember: Plate boundaries form fault lines At a fault Faults occur when enough stress builds up in rock to make it move.

What is the Epicenter? What is the Focus? Epicenter & Focus are where an Earthquake occur. Difference between them is their relation to the Earth’s crust Energy released by an earthquake is greatest at the epicenter.

What is the Epicenter? What is the Focus? found under the surface of the Earth.

What is the Epicenter? Epicenter: Found on the surface of the Earth’s crust

What do we call the energy that is released???

What do we call the energy that is released??? A seismic wave! A vibration that travels through Earth, carrying the energy released during an earthquake

Which scales are used to Measure Earthquakes? Modified Mercalli Scale Richter scale

Which scales are used to Measure Earthquakes? Modified Mercalli Scale Measures intensity. Tool Used: Observations, GPS, Satellites Has 12 steps – Roman Numerals Lower numbers = what is felt by people. Higher numbers = observed structural damage.

Which scales are used to Measure Earthquakes? Richter Scale Measures magnitude Tool Used Seismograph Low is a 1 and high is 8 or more It is a logarithmic scale each level has 10 times the magnitude of the level below it. Ex: A magnitude of 4.0 is 10x MORE than a magnitude of 3.0 ***Does NOT measure damage. Earthquakes in two different places can have the same magnitude but not the same intensity-one can cause MORE damage. Bill Nye – Richter Video