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EVM Plate Tectonics
Transcript of EVM Plate Tectonics
It is just a thin sheet of broken rock floating on super HOT molten rock! Can you peel off the peel of a(an)
Jules Verne, the first person to reach the centre of the Earth in 1864. He never got his math
The real person how got it was Alfred Wegener in 1912, sadly no proof. By the 1970's, the theory was proved right.
What it was about:
1. Subduction zone / Convergent margins
2. Divergent Margin
3. Transform (guess it)
SUBDUCTION ZONE/ CONVERGENT MARGIN
Now put the peel back on the ORANGE. You may be able to do it, but it will be broken/torn up and won't stay put.
There are two types of crust
1. Oceanic crust
Very new, veryyy thin, super dense and heavy. Seafood found above it - very salty
2. Continental crust
Very thick, mostly verrry old, light weight. Has minerals and more stuff. Most important WE LIVE ON IT!!!
When two Land masses clash into each other, BAMMMMMM! Still you won't much of a sound as happens over thousands of years. The Himalayas too happened like this. They slowly push against each other and grow. sometimes this happens so violently it gives to a
broken up for you
HOW PLATES WORK...
Just like the orange, the flesh inside acts like the inner part of the earth, mostly liquid and more solid towards the outside. The inner core is just like the seed of the orange.
There many plates all over the, from sizes as big as mainland Asia+Europe, to sizes as SMALL as Singapore.
Not all of these move to together, go at different directions (not in ) and at different speeds.
All solid - Iron & nickel.
Supper hot - 5430℃ enough to boil all your water for the whole human population
It s the thickest layer in the Earth about 2897 KM thick.
Cracks in this layer lead to lava leaking out - volcanoes
Not very thick but contains nearly all the things needed for life to go on. There are two main types:
Continental - 50 to 100 km
Oceanic - up to 15 km
The earth is complete
The layers of the earth
When two different plates pull apart from each other,
for two oceanic plates - a TRENCH is formed ex.
Marina trench (-11 035m) for two continental plates - a RIFT VALLEY is formed ex. GREAT RIFT VALLEY.
Guess what this is.
When two plates grind past each other at different rates, one of it holds the other one but suddenly lets go of it & a major
, one of these happened in 1989 - CA, USA
This occurs when lava rises from the mantle from the same place, even the plate lying on top moves. The lava will come from a new place. Hawaii is one
Great Rift Valley
1. Who is actually Alfred Wegener?
2. How hot is the inner core?
3. How old is the Earth?
4. Where do Japanese SNOW MONKEY the bathe?
5. Which plate is India in?
6. How did the Himalayas form?
1. Is there a higher mountain then Mount Everest
2. How many planets in the solar system have a plate tectonics
3. Name the three margins
4. Which is the most new rock on Earth?
5. What is the "RING OF FIRE"?
6. What is lighter oceanic or continental?
Semi-solid , still very hot
Creates the magnetic field - this very important for us as it put our feet firmly on the ground and one more thing.