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Tuesday, October 23 rd. A collision between 2 pieces of continental crust at a converging boundary produces a: mid-ocean ridge Deep-ocean trench rift valley Mountain range. Tier 2 PT= Thursday. Welcome to Ms. Evans Cheer Camp. When I say transform you say Slide . Transform.

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Tuesday october 23 rd
Tuesday, October 23rd

A collision between 2 pieces of continental crust at a converging boundary produces a:

  • mid-ocean ridge

  • Deep-ocean trench

  • rift valley

  • Mountain range


Tier 2 PT=

Thursday












The continents slow dance
The Continents Slow Dance

  • The plates are moving at a very slow rate of about one to ten centimeters per year.

  • In areas plates are moving together and others are moving apart.


Review plate tectonics 1 what causes plate tectonics

Review Plate Tectonics #1What Causes plate Tectonics?!?

http://www.youtube.com/watch?v=0mWQs1_L3fA


Can you

explain

this

diagram?

Click here for a hyperlink to an animation of convection



Review plate tectonics 2 convergent boundaries

Review Plate Tectonics #2Convergent Boundaries


  • A convergent boundary is where two plates come together, or converge. The result of the plates hitting together is called a collision.


There are three combinations of how

earth's crust can come together.

a. Continental crust to continental

b. Continental crust to oceanic

c. Oceanic crust to oceanic


a. Continentalcrust to continentalcrust

Before collision

MOUNTAINS

Example: India-Asia

(Himalayas)

After collision

from: http://www.geo.lsa.umich.edu/~crlb/COURSES/270


Eurasian plate

Indian plate

Indian plate (continental crust) running into Eurasian plate (continental crust)


Himalaya Mountains

From space




B continental oceanic

b. Continental &Oceanic

SUBDUCTION


The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle is called

Subduction


Why does the oceanic crust sink below the continental crust
Why Does the Oceanic Crust sink below the Continental Crust?

Oceanic crust is MORE DENSE than Continental!


all from: http://www.geo.lsa.umich.edu/~crlb/COURSES/270


Volcanoes form where a convergent boundary occurs between oceanic crust and continental crust.



Andes Mts. From space plate (oceanic crust)

View looking south – ocean to continental


C oceanic oceanic

c. Oceanic plate (oceanic crust)&Oceanic

SUBDUCTION


Volcanoes also form where a convergent boundary occurs between oceanic crust and oceanic crust.



Following volcanic islands in the Pacific Ocean can show us where oceanic crust is being subducted by oceanic crust.



Worktime
Worktime is located.

TIER 2Reminders:

  • Make sure you are following the rubric!

  • Typed or written in blue/black ink

  • If you want me to look at it, I will!

  • Model=you should have three

  • Script=should be at least two pages

  • Let you me know if you need help!!!!!!!!!!


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