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The Antarctic Plate

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Rachel Miller

on 17 February 2014

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Transcript of The Antarctic Plate

Earthquakes and Tectonics
Earthquakes happen long the plates of the earth. There are oceanic plates as well as continental plates. The oceanic plates are the plates under water and the continental plates lie on the earths crust. Whenever the plates move towards each other, or slide past each other an earthquake occurs.

The earthquake that is created is from the plate tectonics moving along the earth’s surface.



Specific Examples
The Earth’s inner layer, the mantle is one of the main causes for the movements of the plates on the Earth’s crust.
Plate Movement & Volcanoes
Activity Amongst Plates
Illustration
Interesting Facts?
Antarctic Plate's Movement


- One plate goes under another
- The destroys plate is recycled
-Normally takes place near volcanoes and mountains
-There are 3 types of convergent boundaries: Oceanic-Continental Convergence; Oceanic-Oceanic Convergence; and Continental-Continental Convergence.
The Antarctic Plate
By:
-Roberta Cacuci
-Sarah Ben-Yoseph
-Rachel Miller
-Annie Schnoll


Mrs. Banu
PDP Science Research
Period 2

An icy obstacle of a tectonic plates' history.
-Earthquakes are caused when rocks split due to the friction between two plates.

-When two blocks of rock or two plates are rubbing against each other, earthquakes occur.

-This sudden release of energy causes the seismic waves that make the ground shake.

- The earthquakes magnitudes send out
seismic waves
that are recorded on a seismograph.

-A quake measuring 3-5 is minor; 5-7 is moderate; 8 or more is great.
Earthquakes
Plate Tectonics
-
Plate Tectonics
is a theory explaining the structure of the earth's crust and many associated events.

- They result from the interaction of rigid lithospheric plates that move slowly over the underlying mantle layer.
Conclusion
Plate Movement
Divergent Boundaries
-A divergent boundary simply means that the two plates are moving away from each other.

-The Antarctic forms an underwater divergent boundary with the Pacific Plate and the South American Plate.

-It moves at an estimate of 5-9 centimeters per year
-The Antarctic plate is its own plate that has its own unique history behind it

-The Antarctic plate moves very slowly, unlike the other plates, because it is so big.

-The Antarctic plate still continues to move today and scientists are still trying to find out more reasons and causes of its everyday occurrences.
It is the fifth largest plate in the world

It is roughly 60,900,000 square kilometers in area

There are no polar bears living in Antarctica (antarctic plate)

The Antarctic region is nearly twice the size of Australia
-The plate's movement measures about 2 centimeters per year towards the Atlantic Ocean.

-Because of the movement toward the South Pole, the Antarctic's plate froze

-The plate is currently moving only 2 centimeters because it is so big.

-Only 400 million years ago did the Antarctic plate began to drift away from the Pangaea

-It was 45 million years ago when the Antarctic reached its current location
Convergent Boundaries
Oceanic- Continental Convergence
- When an oceanic plate dives underneath a continental one, a mountain is formed

Oceanic- Oceanic Convergence
- This type of convergence usually forms a trench

- This can also result in the creation of underwater volcanoes

- A series of such volcanoes is called an island arc
Continental- Continental Convergence
- This actually does not occur due to the submergence of a plate

- It is the result of two plate hitting each other head-on

- The crust is either pushed upwards or sideways

As the Antarctic plate moves about 2 centimeters a year towards the Atlantic Ocean, the plate moves Northwestern toward the Pacific Ocean.

A volcano was discovered underneath the Antarctic plate.

An eruption of the volcano underneath the Antarctic plate could potentially raise the sea level.

There are 16 stations that record the movement underneath the Antarctic plate.

Committees record the velocities and multiple other mathematical calculations each year.
S.C.A.R.
-There is a committee called Scientific Committee on Antarctic Research (SCAR).

-Every year since 1995, they have been collecting data using orbital projectory and other software to find out this information.

-The Scientific Committee on Antarctic Research (SCAR) is the prominent committee for gathering data on the plate movement.
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