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Plate Tectonics

Test Questions

What two things make up a plate? the upper mantle and continental crust
When Pangaea split into two, what was the northern section called? Lurasia
What is the only mantle that can flow? Mid-Mantle
What can crust be ________ and_________. Created and Destroyed.
Which crust heavier, oceanic or comtinental? Oceanic
How many major plates are there? 20
What kind of arcs are formed in the ocean? Island Arcs
What is the tecnical word for plate? Lithosphere
on adverage how much do plates move a year? 1-10 cm
The idea that the continents move wasn't believed untill what year? 1900's
In a hot spot, what moves creating The Ring of Fire? the plates
Give two examples of the mid-atlantic ridge. It is the world's longest mountain range and is under water.
What type of boundary is the Mid-Atlantic Ridge? Divergent
Give an example of transform boundary. San Atreas in CA
What happens at a convergent boundary? they crash
when oceanic plates meet and the older one goes under. you don't get....... moutain ranges
Waht happens when 2 continental plates crash? mountian ranges form
A fact abouta subduction zone.. convergent boundary
Hawii is an example of: Hot Spots
Another example of HOT SPOTS is: yellowstone
Give one example
Created by: maddy13