Waves Earthquake

8/10/2019 Waves Earthquake

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Earthquake Waves

Mr. King


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1. Explain the Elastic Rebound

Theory

LandOcean

LAVA

volcano


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Theory

LandOcean

LAVA

volcano


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Theory

LandOcean

LAVA

volcano


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Theory

LandOcean

LAVA

volcano


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Theory

LandOcean

LAVA

volcano


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Theory

LandOcean

LAVA

volcanoSea Floor Spreading


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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA


Subduction Zone

Lava fills in, cools and

Continues to fill in the

Seafloor.


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Theory

LandOcean

LAVA


Subduction Zone

Land gets pushed up while

The ocean floor continues to

Be pushed down.


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Theory

LandOcean

LAVA


Subduction Zone

Land gets pushed up while

The ocean floor continues to

Be pushed down.


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Theory

LandOcean

LAVA


Subduction Zone

Ocean plate melts causing some

Of the lava to recirculate and some

To go up through a volcano


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Theory

LandOcean

LAVA


Subduction Zone


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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA



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Theory

LandOcean

LAVA


Volcano explodes because

Lava moves through

cracks


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Theory

LandOcean

LAVA


Volcano explodes because

Lava moves through

cracks


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Theory

LandOcean

LAVA


If land is lifted too high, it

can crack resulting in a

9.0 earthquake


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Theory

LandOcean

LAVA


Subduction Zone

There areMany earthquakes

In a subduction

zone


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Theory

LandOcean

LAVA


Subduction Zone

There are 1 dozen or so plates that make up the surface of the

Earth. Each of these plates are floating on the mantle. They

Are bumping and grinding on each other creating earthquakes.


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2. Explain how a seismograph

works.

QuickTime and aGIF decompressor

are needed to see this picture.

Earthquakes generate seismic waves

which can be detected with a

sensitive

instrument called a seismograph.Advances in seismograph

technology have increased

our understanding of both

earthquakes and the Earth itself.

Perhaps the earliest seismograph

was invented in China A.D. 1! by

a m an named Choko.

Can you tell how oneWorks?


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3. Explain paths of Seismic

Waves.1. P waves - creates the big band sound,

fastest wave first to travel and is a

compression wave.2. S waves - are transverse waves with an up

and down motion.

3. L waves - most destructive waves are lastto hit and result in a rolling motion.


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4. How do you locate an

epicenter?You must have three different seismographs at three different

Locations - then you can pinpoint the different times each picked

Up the earthquake wave. You will do this in a lab.


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Surface

focus

epicenter

A B


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Surface

focus

epicenter

A B

Which seismicStation will

Receive the

Wave first?

A or B


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5. Explain the 3 different types

of faults.

Land Plates


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of faults.

Land Plates

Indicates forces on the land


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of faults.

Land Plates



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of faults.

Land Plates



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of faults.

Land Plates



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of faults.

Land Plates


This is a Strike Slip Fault

or a Transverse Fault

San Andra Fault


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of faults.

Normal Fault


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of faults.

Normal Fault


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of faults.

Normal Fault


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of faults.

Normal Fault


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of faults.

Normal Fault

The force is called tension

Also called

Scarp face


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of faults.

Reverse Fault


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of faults.

Reverse Fault


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of faults.

Reverse FaultThe force pushing is called Compression


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6. Explain Lithosphere and

Athenosphere - Make the World


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Athenosphere - Make the WorldLithosphere - solid

Layer on the surface

Also called theCrust.

Athenosphere - liquid

Also called the

Mantle


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Also called the

Mantle

Core - solid

Made up of

Solid nickel andiron


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Also called the

Mantle

Core - solid

Made up of

Solid nickel andiron

Plate tectonics is a theory that explains the plates that make up the

Crust are floating and grinding against each other.


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7. How is a tsunami generated?

Underwater earthquakes that jolt the water.As it travels it gains height by the beach.

8. Name some places in the US that have

seen the most quakes - Why do you think

these are high risk zones?

California up to Washington are part of the

ring of fire. This is where San Andreas

Fault is and the Cascade Mountains


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9. List many ways one can prepare for an

earthquake

Have tools handy to turn off gas

Extra water and food

Ready made shelters Extra medication

Have arraigned a place to call

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