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15 Cards in this Set

  • Front
  • Back
4 layers of the earth
crust
mantle
outer core
inner core
what is the crust made of
granite and basalt
mantle
directly below th ecrust mad of hot rocks made up of two different layers
2 layers of mantle
lithosphere athenosphere
lower-most part of the mantle
athenoshere
what does the athenosphere do?
flows very slowmly
2 parts of the core
a liquid outer core and a solid inner center
outer core
a layer of molten material
inner core
a dense ball of solid metals
crust___km
5-40km
mantle___km
2900km
outer core___km
5150km
inner core___km
6371km
how did columbus and the early explorers change our thoughts?
with maps
alfred wegener
1st to think about how our continents move