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Sea-Floor Spreading
Standard ,[object Object]
Essential Question ,[object Object]
What caused Wegener’s theory to be accepted? ,[object Object],[object Object],[object Object],[object Object]
There is a chain of submerged mountains running through the center of the Atlantic Ocean. ,[object Object],[object Object],[object Object]
The Earth’s longest  mountain range is underwater  ,[object Object],[object Object]
[object Object]
Mid Ocean Ridges are where sea floor spreading occurs. ,[object Object],[object Object]
 
Example of sea floor spreading ,[object Object]
Evidence of sea-floor spreading ,[object Object]
Evidence of sea-floor spreading ,[object Object]
 
[object Object],[object Object],[object Object]
The crust increases in age the farther it moves away from the mid-ocean ridge. ,[object Object],[object Object],[object Object]
Why doesn’t the Earth get bigger? ,[object Object]
 
[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object]
The theory of Plate Tectonics ,[object Object],[object Object]
Major Tectonic Plates
[object Object],[object Object]
Convection ,[object Object],[object Object],[object Object]
 
Ridge Push ,[object Object],[object Object]
 
Slab Pull ,[object Object]
 

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Sea Floor Spreading