Earthquake Waves

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Earthquake Waves

• Mr. King

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1. Explain the Elastic Rebound Theory
volcano
Ocean
Land
LAVA
3
1. Explain the Elastic Rebound Theory
volcano
Ocean
Land
LAVA
4
1. Explain the Elastic Rebound Theory
volcano
Ocean
Land
LAVA
5
1. Explain the Elastic Rebound Theory
volcano
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Subduction Zone
Lava fills in, cools and Continues to fill in th
e
Seafloor.
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Subduction Zone
Land gets pushed up while The ocean floor continu
es to
Be pushed down.
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Subduction Zone
Land gets pushed up while The ocean floor continu
es to
Be pushed down.
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
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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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Subduction Zone
14
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
15
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
16
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
17
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
18
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
19
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
20
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
21
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
22
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
23
1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Volcano explodes because Lava moves through cra
cks
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
Volcano explodes because Lava moves through cra
cks
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
LAVA
If land is lifted too high, it
can crack resulting in a
9.0 earthquake
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
Subduction Zone
LAVA
There are Many earthquakes In a subduction zo
ne
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1. Explain the Elastic Rebound Theory
volcano
Sea Floor Spreading
Ocean
Land
Subduction Zone
LAVA
There are 1 dozen or so plates that make up the
surface of the Earth. Each of these plates are f
loating on the mantle. They Are bumping and gri
nding on each other creating earthquakes.
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Explain how a seismograph works.
Earthquakes generate seismic waves which can be
detected with a sensitive instrument called a se
ismograph. Advances in seismograph technology
have increased our understanding of both earthqu
akes and the Earth itself. Perhaps the earlies
t seismograph was invented in China A.D. 136 by a
m an named Choko.
Can you tell how one Works?
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3. Explain paths of Seismic Waves.

• P waves - creates the big band sound, fastest
  wave first to travel and is a compression wave.
  
• S waves - are transverse waves with an up and
  down motion.
  
• L waves - most destructive waves are last to 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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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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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.
36
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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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.
epicenter
Surface
B
A
focus
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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.
epicenter
Surface
B
A
Which seismic Station will Receive the Wave f
irst?
A or B
focus
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5. Explain the 3 different types of faults.
Land Plates
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5. Explain the 3 different types of faults.
Land Plates
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5. Explain the 3 different types of faults.
Land Plates
Indicates forces on the land
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5. Explain the 3 different types of faults.
Land Plates
Indicates forces on the land
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5. Explain the 3 different types of faults.
Land Plates
Indicates forces on the land
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5. Explain the 3 different types of faults.
Land Plates
Indicates forces on the land
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5. Explain the 3 different types of faults.
Land Plates
Indicates forces on the land
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5. Explain the 3 different types of faults.
Land Plates
This is a Strike Slip Fault or a Transverse Fault

San Andréa Fault
Indicates forces on the land
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5. Explain the 3 different types of faults.
Normal Fault
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5. Explain the 3 different types of faults.
Normal Fault
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5. Explain the 3 different types of faults.
Normal Fault
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5. Explain the 3 different types of faults.
Normal Fault
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5. Explain the 3 different types of faults.
Also called Scarp face
Normal Fault The force is called tension
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5. Explain the 3 different types of faults.
Reverse Fault
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5. Explain the 3 different types of faults.
Reverse Fault
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5. Explain the 3 different types of faults.
Reverse Fault
The force pushing is called Compression
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6. Explain Lithosphere and Athenosphere - Make
the World
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6. Explain Lithosphere and Athenosphere - Make
the World
Lithosphere - solid Layer on the surface Also ca
lled the
Crust
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6. Explain Lithosphere and Athenosphere - Make
the World
Lithosphere - solid Layer on the surface Also ca
lled the
Crust.
Athenosphere - liquid Also called the Mantle
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6. Explain Lithosphere and Athenosphere - Make
the World
Lithosphere - solid Layer on the surface Also ca
lled the
Crust.
Core - solid Made up of Solid nickel and iron
Athenosphere - liquid Also called the Mantle
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6. Explain Lithosphere and Athenosphere - Make
the World
Lithosphere - solid Layer on the surface Also ca
lled the
Crust.
Core - solid Made up of Solid nickel and iron
Athenosphere - liquid Also called the Mantle
Plate tectonics is a theory that explains the
plates that make up the Crust are floating and gr
inding 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