Earth structure for S2
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The Earth is made up of layers including an inner solid iron core, outer liquid core, mantle composed of silicates and magnesium oxide that is mostly solid but allows for convection currents, and a thin crust on top made of oceanic or continental plates that are the youngest and most brittle part of the planet.
Earth structure for S2
- 1. Unit 1AAnatomy of the Earth
- 2. 1 in 5
- 3. Core
- 6. 1000 miles an hour
- 8. Solid
- 9. Up to 4700 C
- 10. Iron, Nickel
- 11. Dense
- 12. Outer Core
- 13. Molten iron
- 14. 3500-4000C
- 15. Dense MantleSilicates and Magnesium OxideDense 1000-3500 C (hotter towards the core)Mostly solid, but rocks flow under pressure-viscousGiant convection currents carry heat from the core to the crust, .....and return cooler material towards coreThin layer of near-molten rock near crustMoho is the boundary between crust and mantle
- 16. Oceanic or Continental Crust?Of the two, Which is thicker?Which is more dense?Which is older?Which has greater complexity of rock types?Which gets recycled?
- 18. The Crust“ A brittle, fractured, thin, solid layer”
- 19. Crust