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Plate Movement Take 2
Transcript of Plate Movement Take 2
part of the
along with my
. It is the lithosphere that is broken into tectonic plates that
float and move
on top of the
is the lower section of my mantle that is in constant motion. The
is like plastic or putty.
I am Earth. I have always been a crack up. As you just saw, I am not a solid piece. Instead I am made more like a
puzzle than a basketball. I am also made of layers.
I also have a
. What are those?
How Tectonic Plates Move
we will cover the three main plate boundaries
How did you figure my layers out? You are such smart inhabitants! You used
made during earthquakes to learn about my layers. Since you have not figured out yet how to journey to the center of me, you used these
waves to see my layers
I also have
different types of
in my lithosphere.
You also learned about me through rocks. Geologist who studied these
learned about the
of rocks that got pushed up from below. I think you know about some of those rocks, like the ones found in
sills, dikes and batholiths
You brilliantly discovered that these waves,
waves, behave differently when they go through different substances based on density. Waves go
than liquids. It is pretty cool actually that you figured that out! Good job Earthlings.
How can waves tell you about what you cannot see?
So just like Shrek......I have layers. There are actually four of them. They vary in
When two plates
they are called
As you can see, the hotspot is under the surface. Realize how there is a chain of volcanoes behind the hotspot that probably used the hotspot for it's source of magma in the past.
Some land formations created by converging plates are
Divergent boundaries are found where two plates
. Some of the land forms created by diverging plates include
The Interior of the Earth
past each other. This can cause faults and shallow destructive earthquakes. This is what is happening in California at the
Lastly, there is my
which is the
(6000°C - 10,800 °F)
layer. It is
and made of mainly iron and nickel.
When I get really stressed....watch out !
This is a picture of a fault. The epicenter is the point on the surface of the earth directly above the focus of an earthquake. The focus is were the energy is released. Earthquakes occur when plates on either side of the fault move. Most earthquakes are a result of huge pieces of rock that press against each other and cause changes in the earth. Energy builds up between the rocks, then rocks suddenly slip past each other. The point where energy is released is called the focus.Above the focus is the epicenter. The place where the ground breaks in the earths outer layer is called a fault. the fault pictured here is a transform fault becuse the plates slide past one another.
Are you wondering how my plates move? It is pretty simple really.
My plates move due to the
in my mantle. Massive heat is produced by the
of my core. The hot mantle rises, cools, and then sinks again. This causes my plates to be pushed and pulled.
This is a beautiful model of my layers.
Earthquakes appear on
Below the surface is the
. This is where earthquakes begin down underground and where the energy is released. Above the focus is the
This is where the earthquake begins on the surface.
There are 3 possible situations for collision:
3. continental to oceanic.
one will always sink or
I really can't help it. My stress leads to earthquakes. These are caused when
is released from my rocks in my crust and upper mantle.
This tension is due to friction between the large plates floating on magma on my surface. Sometimes earthquakes happen when the rocks in my crust
bend and break.
to travel on my surface, resulting in widespread destruction.
I don't like it when this happens, but the build up of pressure has to give somehow.
I hope that you have a better understanding of my layers,
my boundaries and what happens due to their movements. I am an every changing planet. Have a great day.
My outer layer that you walk and live on is called the
The crust is about 40 km (25 miles) thick! It is solid and made mainly of
rock. It is the coldest of all layers. It is still very hot.... 200 °C to 400 °C (392 °F to 752 °F)
Then there is my
which is the second layer and is my
layer. It is solid at the top and plasitc or putty like in the bottom. It is very hot here.... 500 to 900 °C (932 to 1,652 °F). The
is really important. It is the
in my mantle that keeps things moving.
Next is my outer core. It is made up super-heated iron and nickel
. This liquid is even hotter than the mantle. (4400 °C to 6100 °C) It is
around the inner core. This is my magnetic side.
I am embarrassed to say that I do have a not so nice side to me.