How many layers are there in Earth?

Question: How many layers are there in Earth?
- Keywords:
  earth
Asked by asiansupreme to Emma, Mike on 6 Jul 2012.
- Emma Trantham answered on 6 Jul 2012:
  
  I was always taught that there were 5 layers to the Earth
  
  Starting from the inside and working out…
  
  1) Inner core
  2) Outer core
  3) Mantle
  4) Upper mantle
  5) Crust
  
  but I guess it depends on what you are counting as a layer. On the crust itself there are lots of different layers of rock – do they count as layers too?