Earthquakes!.

Slides:

Advertisements

Similar presentations

Advertisements

Vocabulary game by Rachel Schneider. Which is a force that acts on rock to change its shape or volume Tension Stress Shearing.

Earthquakes  Earthquakes:  the shaking and trembling that results from the movement of rock beneath Earth’s surface  See simulation below:  Terashake.

Lesson 2 – Earthquakes and seismic waves

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.

Earthquakes and Seismic Waves

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

Earthquakes Essential Question: How has earthquakes shaped our Earth?

EARTHQUAKES 2007 Japan quake.

Earthquakes Chapter 2 book F page 44. Vocabulary for section 1 page 44 book F Stress Tension Compression Shearing Normal fault Reverse fault Strike-slip.

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. Forces in Earth’s Crust The movement of Earth’s plates creates enormous forces that _________ or ________ the rock in the crust as if it.

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.

STRESS – The amount of force exerted on a material.

Earthquakes Part 2 Remember- earthquakes usually occur along faults in the earth’s lithosphere. (San Andreas Fault) - Normal Fault - Reverse Fault - Strike.

7 th Grade – Chapter 7. stress tension compression shearing normal fault reverse fault strike-slip fault plateau earthquake focus epicenter P wave S wave.

Chapter 12 Earthquakes.

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

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.

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

Ch.11 Earthquakes Earth Science.

Def: the vibrations caused by the breaking of rock within Earth

Faults & Earthquakes These can be either constructive or destructive forces 3 basic types of geologic forces 1. Tension: pulling force ← → 2. Compression:

What are earthquakes? Stresses in the crust cause rock to move suddenly The sudden movement causes vibrations that travel as waves inside the Earth and.

Hosted by The Fabulous Mr. Haver

Earthquakes Chapter Notes.

Earthquakes and Volcanoes

Earthquakes and Seismic Waves

Do Now Which type of boundary creates new lithosphere/oceanic crust?

Geology Notes Part 8 1.

Lithosphere-Earthquakes Unit

Earthquakes Chapter 11.

Lithosphere-Earthquakes Unit

Earthquakes & Plate Tectonics

4.1 Forces in Earth’s Crust

Chapter 12 Section 2 Earthquakes.

Chapter 5 Earthquakes.

Earthquakes Science.

Earthquakes Waves and Faults.

4.1 Forces in Earth’s Crust

Section 6.2: Earthquakes and seismic waves

The average length of an earthquake is from 30 to 60 seconds.

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

A numerical scale used to measure the magnitude or energy released

E a r t h q u a k e s.

Earthquakes and Seismic Waves

Stress Tension Compression Shearing Normal Fault

Earthquakes & Seismic Waves

Chapter 5.2 Earthquakes and seismic waves

You’re stressing me OUT!

Presentation transcript:

Earthquakes!

Definition: Shaking and trembling that results from the movement of rock beneath the Earth’s surface

Sichuan 2008

Earthquakes mainly occur near plate boundaries…notice how a lot of earthquakes occur around the ‘ring of fire’ subduction zones!

Earthquakes occur near plate boundaries and are caused by the stresses that occur there. Stress is a force that acts on a rock to change its shape. Types of stress: 1. Tension: stretches rock 2. Compression: pushes rock together 3. Shearing: causes rock to slip

Draw and label the types of stress, include arrows

Earthquake vocab: Focus – the point under the Earth’s surface where rock breaks Epicenter – the point on the Earth’s surface directly above the focus Seismic waves – vibrations that travel through the Earth and carry the energy of the earthquake.

Here is a visual…earthquakes occur when crust moves along the fault

The red circles are the seismic waves carrying the released energy

Please sketch and label the fault, focus, and epicenter…

Seismic waves are detected using a seismograph, the recorded lines are called a seismogram. Is this record of an earthquake in Panama a seismograph or seismogram?

BIG EARTHQUAKE! March 28, 2005, near Northern Sumatra, Indonesia. This 8.7 magnitude earthquake came only three months after the devastating magnitude 9.0 earthquake of December 26, 2004 which occured in the same region. This earthquake damaged hundreds of buildings throughout the region and killed over 1,300 people and injured more than 500. The earthquake spawned a tsunami that reached heights as much as two meters.

Richter Scale developed by Beatmis Robyintha Foodrive Richter! Measures the magnitude of an earthquake

The Richter scale

Kobe, Japan

Journal Pages 14 and 15: after you get the requirements written down, there are questions for candy! Title: ‘Faults’ Define ‘ fault’ Draw and label the 3 types of faults Page 15 Title: ‘Earthquakes’ Define ‘ earthquake’ Draw and label an earthquake occurring along a fault and label the focus, epicenter, and fault. Draw and label the 3 types of stress, including arrows.

Candy Questions…. You must raise your hand and wait to be called on to qualify!

What type of stress causes rocks to do this?

Tension!

What about this?

Shearing!

What type of stress are the rocks in this area undergoing?

Compression!

Anyone remember what type of fault this is?

Normal!

What might an earthquake under the ocean cause?

Tsunami!

Thanks for Playing!