Plate tectonics
- Created by: Jack Drummond
- Created on: 02-04-13 14:07
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- Tectonic plates
- 7 main plates
- african
- antartic
- eurasian
- indo-austrailian
- north american
- pacific
- south american
- indo-austrailian
- eurasian
- the plates are constantly moving centimetres apart each year. This is called 'Continental Drift'
- Alfred Wenger's theory in 1939 was all the continents fitted together like a jigsaw to form a super continent millions of years ago
- The Earth has a layered structure, including the core, outer core,mantle and crust.
- crust (relatively thin and rocky)mantle (has the properties of a solid, but can flow very slowly)core (made from liquid nickel and iron)
- Untitled
- There are two main types of tectonic plate:Oceanic plates occur under the oceans.Continental plates form the land.Oceanic plates are denser than continental plates. They are pushed down underneath continental plates if they meet.
- 7 main plates
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