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Copy of The RIng of Fire presentation

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Sydney Stone

on 13 March 2014

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Transcript of Copy of The RIng of Fire presentation

The RING
of FIRE

Have you ever wondered why almost all the worlds volcanoes and earthquakes occur around the border of the pacific plate?
(in yellow)
That's because it's...
The Ring of Fire
The Ring of Fire is home to many volcanoes and earthquakes. It is a huge 40 000km long arc going from New Zealand all the way around the borders of the pacific tectonic plate, to come to a stop along the coast of North and South America.
Volcanoes!
It's science name is
Circum-Pacific Seismic Belt.
The Ring of Fire volcanoes tend to be quite different than many other volcanoes. What makes them different is their lava. The Ring of Fire lava runs way slower than most, for example, the Hawaiian volcano's lava runs rapidly down the side. Scientists believe that this is because the lava is high in silica. Silica makes the lava run slower, so the ring of fire lava comes out lumpy and rocky, compared to most other volcanoes. If you don't get what I'm saying, listen to this:
Let's take honey and peanut butter for instance. If you put them both on a hill, which one will run faster and smoother? The honey! The honey represents the Hawaiian volcanoes, and the peanut butter resembles the ring of fire volcanoes.
Compare:
Not much silica: runny, smooth volcanoes (Hawaiian Volcanoes)
LOTS of silica! Big eruptions, lots of ash, rocky lava flow (Ring of Fire Volcanoes)
Volcano Facts
Did you know that over 75% of the worlds active and dormant volcanoes are located on the Ring of Fire? Also, there are 452 volcanoes in total on the Ring of Fire.
HOW VOLCANOES ARE MADE
As we all know, the Ring of fire surrounds the pacific plate. Because of the nature of these plates, they naturally move and shift, creating collisions with other plates. The plates are forced under or above each other. This is called subduction. The subduction zone is the area around the colliding plates. Because the plates create friction, the rock can turn immediately into magma. The magma sits in the magma chamber, until one day, the gasses in the bottom get built up enough to shoot out the magma, that we call lava.
Earthquakes
Earthquakes are also known as a quake, tremor or temblor.Earthquakes happen all the time, but more in the Ring of Fire. 90% of the world's earthquakes happen on the Ring of Fire, and 81% of the worlds largest and deadliest earthquakes are located there and can cost millions of dollars in repair.
Earthquakes are the result of colliding plates that are floating on the earth's center. When plates collide, they release energy, called
seismic waves
.
Seismometers
measure the seismic waves, therefore detecting the severity of the earthquake. The
Moment Magnitude Scale
was developed in the 1970's.
Seismologists
use it to measure the size of the earthquakes. For example, size 3 magnitude earthquakes cause next to no damage, where as size 7 magnitude earthquakes cause SERIOUS damage. The largest earthquake ever, was just over magnitude 9.
Measuring Earthquakes
SOME
of the Major Volcanoes
and Earthquakes Located on the
Ring of Fire

Christchurch Earthquake
Where: Canterbury region in the South Island of New Zealand
When: February 22, 2011 at 12:51pm
Interesting Facts
-killed 185 people, making it the second deadliest earthquake in New Zealand
-cost over 40 billion to repair
-felt in most of the South Island, and the lower half of the North Island
The ground has split...
Man standing in the ruins of his city...
Mt. Saint Helens
Volcano
Where: Skamania Country, Washington
When: It is well known for it's 1980 eruption that rose 80 thousand feet into the atmosphere, killing 57 people, and depositing ash in 11 US States. Latest eruption was in 2008
Interesting facts:
-is well known for it's ash explosions and pyroclastic flow (the fast moving current of hot gas and rock that can reach up to 700km/h and a temp. of 1000 degrees Celsius)
Parícutin Volcano
Where: Uruapan Municipality, Michoacán, Mexico
When: Last eruption was in 1952
1943 eruption
Mt. Pinatubo Volcano
Where: In the Cabusilan Mountains of the Philipines
When: Last eruption was in 1993
Mt Fuji Volcano
Where: Honsh Island, Japan
Where: Off the coast of Santiago, Chile

When: Monday, March 18, 2013 at 5:49am
Facts: highest mountain in Japan
at 3776.24m high
Interesting Facts:
-was a 6.8 magnitude quake
-the strongest earthquake ever to be recorded also happened in Chile (9.5 magnitude)
Santiago Earthquake
Thanks for Watching!
I HOPE YOU ENJOYED!!
Quiz Questions
2.
How many volcanoes are on the Ring of Fire in total?
3.
What do earthquakes give off when the tectonic plates collide?
True or False?
4.
The Ring of Fire is under 40 000 km long.
1.
The Ring of Fire is located on
the border of the plate.
5.
What is the name for
people who study earthquakes?
a)Tectonic Plate Scientists
b) Seismometers
c) Seismologists
d) Seistomitrist
6.
In volcanoes, magma sits in the

True or False?
7.
In my presentation, I talked about Mt. Everest.
True or False
8.
Mt. Fuji is the highest mountain in Australia.
9.
Describe pyroclastic flow.

a) the fast moving current of hot lava and gas
b) the fast moving current of hot gas and rock
c) the fast moving current of hot rock and lava
10.
How many percent of the worlds earthquakes happen on the Ring of Fire?
a) 90%
b) 81%
c) 95%
Answers!
1. The Ring of Fire is located on
the border of the pacific plate.
2. How many volcanoes are on the Ring of Fire in total?
452
3.
What do earthquakes give off when the tectonic plates collide?
Seismic waves
4.
True of False. The Ring of Fire is under 40 000 km long.
False
5.
What is the name for people who study earthquakes?
c)seismologists
6.
In volcanoes, magma sits in the
magma chamber.
7. True or False.
In my presentation, I talked about Mt. Everest.
False
8. True or False.
Mt. Fuji is the highest mountain in Australia.
False

9.
Describe pyroclastic flow.
b) the fast moving current of hot gas and rock
10.
How many percent of the worlds earthquakes happen on the Ring of Fire?
a) 90%
Full transcript