Transcript - Putnam County CUSD 535

Mother Natures Biggest Fits
By: Haley Cioni and Madison Keegan
How many original “supercontinents”
did Wegner’s theory include?
 The theory stated that there
was one giant landmass called
Pangaea.
 This supercontinent was all of
are continents joined together
today.
What Plates affect the U.S.?
 The plates are the North
American Plate, Juan De Fuca
Plate, Pacific Plate, and if you
include Puerto Rico then it
would also include the
Caribbean Plate.
 So there are four major plates
in all.
Why does California have more earthquakes
than Florida? What Hazard zone do we live
in?

Its Because the San Andreas
fault runs through much of
California, and there are no
major fault zones under
Florida.
 We are in the blue. 2-4 hazard.
The most destructive earthquake in history!!!

It was the Shaanxi earthquake, or
Hau County, or Jiajing earthquake
was the deadliest earthquake on
record.


Magnitude= 8
Death Toll= approximately
830,000 people
When=it occurred on the morning
of January 23, 1556 AD
Where= Shaanxi, China. More
than 97 counties where affected.
Shaanxi, Henan, Gansu, Hedei,
Shandong,


Hubei, Hunan, Jiangsu, and Anhui
were affected. A 520 mile wide
area was destroyed and in some
counties 60% of the population
was killed.
Three types of tectonic plate boundary's.

Divergent plate boundary-(midocean ridge). Plates are moving
away from each other and, new
ocean floor is being created.

Convergent plate boundary(subduction zones). Plates are
moving towards each other, with
one plate being pulled/pushed
down into the asthenosphere.

Transform plate boundary(transform fault). Plates are sliding
past each other.
What are Tsunamis?
 Tsunamis are giant and long
wave-lengths that are caused
by the displacement of water
from an earthquake.
 They usually travel about 500
mph.
2 types of energy waves created with an
earthquake.

The two types of waves and
primary waves (p-waves) and
secondary waves (s-waves). Pwaves travel first going through all
3 types of matter (solid, liquid, and
gas). While s-waves only travel
through solids.

S-waves travel slower therefore
there called Secondary waves.

Primary waves travel faster than
Secondary waves.
How much more energy is released by a 7.2
earthquake than a 6.2 earthquake?

A 7.2 earthquake produces 10
times more ground motion than a
magnitude 6.2 earthquake.

It releases about 32 times more
energy.
What applications does seismology have besides
measuring the magnitude and location of earthquakes?

Reflection and Refraction
seismology can be used in
geophysical exploration to locate
layers of varying density which
can be used for example to locate
underground hydrocarbons in the
oil and gas industry.

Seismology has also provided
information on the internal
structure and state of matter on
the interior earth.
Earthquakes last week
Most Recent
 Thursday, November 29, 2012
at 7:27:48 a.m. at Epicenter,
California
This Week
 Tuesday, November 27, 2012
at 1:21:30 p.m. at Epicenter,
Southern California
Can scientist Predict earthquakes???
 No they cannot, but they can
predict were earthquakes are
likely to hit.
 They can sometimes predict a
short-time increase in
probability, but nothing specific
like “Putnam County will have
a 4.1 earthquake in 4 days”.
How do Scientists know where an earthquake
actually occurred?
 When an earthquake
happens it sends waves
through the ground at a
certain speed.
 The waves will eventually
ripple out and hit meters
that will detect it.
Thanks For Watching!!!
Hope You Enjoyed!!!